Building automation systems (BAS) provide automatic centralized control of the heating, ventilation, air conditioning, lighting, security, emergency and other systems of a building. Sensors, controllers, and a communications protocol monitor the building’s systems and make adjustments as necessary to keep those systems within preset limits. A properly implemented automation system offers increased comfort and regulatory compliance while saving money through lower manpower costs and higher energy efficiency.

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Greyline Instruments PTFM 1.0 Ultrasonic Flow Meter
Portable transit time flow meter for accurate flow measurements of clean liquids with less than 2% solids or gas bubbles
$4,295.00
In Stock
Panametrics TransPort PT900 Ultrasonic Flow Meter
Single or dual channel ultrasonic flow system configured to your specifications, portable for temporary or spot flow measurement
  • FREE Samsung tablet & case
$6,550.00
In Stock
Badger Meter M2000 Electromagnetic Flow Meter
Versatile, user-friendly flow metering system for general purpose applications
$1,749.00
In Stock
Blancett 1100 Turbine Flow Meter
Inline turbine flow meters for corrosive and abrasive fluid measurement with flow range up to 5000 GPM
$394.00
In Stock
Dynasonics TFX Ultra Ultrasonic Flow Meter
Clamp-on ultrasonic flow and energy meters for liquids
$1,630.00
Badger Meter RCDL Nutating Disc Flow Meter
Accurate, cost effective solution for metering industrial fluids
$147.00
In Stock
GPI G2 Turbine Flow Meter
Flow range from 1 to 10 up to 20 to 200 GPM (formerly known as the RG45-B)
$876.00
$700.80
In Stock
Dynasonics DXN Ultrasonic Flow Meter
Portable ultrasonic flow and energy meter, available with doppler, transit time and liquid thermal flow technologies
$6,150.00
Honeywell IAQPoint2 Indoor Air Quality Monitor
Touchscreen, triple monitoring (CO2 or VOCs, temperature and humidity)
$221.00
In Stock
King Instrument 7430 / 7440 Series Rotameters
Low-flow, borosilicate glass rotameters with optional alarm
$183.00
In Stock
Badger Meter Recordall Compound Series Meter
Combine two metering technologies in one innovative package
$2,364.00
Dwyer 626 / 628 Industrial Pressure Transmitter
Corrosion resistant 316L stainless steel wetted parts, pressures up to 8000 psi, compact design
$84.50
In Stock
Fuji Electric Time Delta-C Ultrasonic Flow Meter
Transit time, clamp-on flow meter for noninvasive liquid flow measurement
$2,249.00
In Stock
Dwyer 2000 Series Magnehelic Pressure Gauges
Low pressure Magnehelic gauges with frictionless movement to quickly indicate positive, vacuum or differential pressures
$63.50
In Stock
Setra SRPM Room Pressure Monitor
Designed for critical low differential pressure applications that require stringent pressure monitoring and alarming
$1,404.50
$1,151.69
Seametrics MJN / MJP Series Pulse Water Meter
Dry top multi-jet design, tolerates low quality water, sensors types: hall-effect device, reed switch, totalizer
$109.00
In Stock
Hedland EZ-View Liquid Flow Meters
Polysulfone variable area flow meters for oil and water
$70.00
In Stock
Blancett B3000 Flow Monitor
A flexible, durable, easy-to-use platform for flow metering applications with 2 programmable status alarms
$525.00
In Stock
Krohne OPTISONIC 6300P Ultrasonic Flow Meter
Portable clamp-on flow meter combines mobile and quick liquid measurement with proven precision and reliability
$8,384.00
Dynasonics Series DFX Doppler Ultrasonic Flow Meter
Measures the flow of liquids that contain sound reflectors, suspended solids, or gas bubbles
$1,950.00
Badger Meter M3000 Electromagnetic Flow Meter
Non-intrusive flow meter with Class I, Div 2 hazardous location approval for almost any conductive fluid or slurry
$2,404.00
Badger Meter Industrial Turbo Turbine Flow Meter
Flow meter for applications with some high volume and/or high flow rates
$973.00
GPI Flomec QSE Electromagnetic Flow Meter
Dependable, highly accurate electromagnetic flow meter designed for flow and usage monitoring in commercial applications
$1,194.00
$955.20
Badger Meter M1000 Electromagnetic Flow Meter
Available in sizes from 1/4 to 10 inches with processor-based signal conversion, accurate to ±0.3%
$1,667.00
King Instrument 7330 Series Rotameter
Polysulfone rotameters with PVC/PVDF union ends, replaces IK55-B
$258.00
Edgetech RH CAL Portable Relative Humidity Calibrator
Portable, NIST traceable chilled mirror calibration chamber for relative humidity, temperature, and dew point
$13,750.00
Universal Flow Monitors CoolPoint Flow Meter
Vortex shedding flow meter for low viscosity fluids
$465.00
Keller Preciseline High Accuracy Pressure Transmitter
Up to 15,000 PSI precision pressure transmitter with RS485 and choice of 4-20mA, 5VDC, 10VDC or SDI-12 output
$495.00
Telaire T7000 Series CO2 Monitors
Handheld indoor air quality testing for carbon dioxide, temperature and ventilation rates
$627.96
$502.37
In Stock
Dwyer 605 Series Magnehelic Indicating Pressure Transmitters
Provides for both visual monitoring and electronic control of very low differential pressure
$274.00
Blancett B2900 Flow Monitor
Offers advanced digital signal processing technology in a flexible, easy-to-access package
$625.00
Telaire T8000-R Series CO2 Monitor
Low cost, high performing CO2 transmitter with relay for the building controls and indoor growers markets
$376.99
$301.59
In Stock
Dwyer 1950 Pressure Switch
Explosion-proof differential pressure switch offers compact size, low cost and weatherproof protection
$173.00
Hedland Water and Other Fluid Flow Meters
Variable area flow meter for water and other fluids at temperatures of -20 to 240°F, stainless steel or brass, 1/4 to 3in sizes available
$245.00
In Stock
NoShok 100 Series Pressure Transmitters
High performance, current output pressure transmitters
$432.43
Greyline Instruments PT400 Ultrasonic Flow Meter
Portable transit time flow meter is ideal for spot checks or for extended operation as a 4-20mA flow transmitter
$3,795.00
Telaire Ventostat Series CO2 Monitor
Commercial grade Carbon dioxide detectors for ventilation control and air quality applications
$339.29
$271.43
In Stock
Keller Econoline General Purpose Pressure Transmitter
Up to 10,000 PSI pressure transmitter with 1/4in-18NPT male process connection and choice of 4-20mA or 0.5 to 4.5VDC ouput
$155.00
In Stock
Keller Valueline High Accuracy Pressure Transmitter
Up to 15,000 PSI precision pressure transmitter with choice of 4-20mA, 5VDC, or 10VDC ouput
$330.00
King Instrument 7100 Series Rotameter
Stainless steel rotameter great for low flow, high pressure water or air applications
$832.00
King Instrument 7710 Series Rotameter
Stainless steel rotameters with magnetically-coupled dial-type indicators, replaces the IK55-F
$820.00
Modus T Series Pressure Transmitters
Measures differential (dry/dry), gauge pressure, or vacuum, suitable for air or inert gases
$196.00
Brooks GF100 / GF120 / GF125 Mass Flow Controllers
High purity and ultra-high purity digital thermal mass flow devices, flow range from 3 sccm to 55 slm, MultiFlo capabilities
Call for pricing
King Instrument 7610 Series Rotameter
Borosilicate glass rotameters with optional alarm, replaces the IK55-E
$688.00
Gems FS-200 Series Flow Switch
Ideal for detection of improper flow rates in high volume lubrication, cooling or process systems
$233.00
Greyline Instruments LIT25 Level Transmitter
Non-contacting ultrasonic sensor that accurately displays, controls and transmits level
$975.00
E+E EE071 Humidity / Temperature Probe
Designed for use in demanding OEM applications, Modbus interface, excellent protection against pollution
$218.00
In Stock
E+E EE23 Humidity / Temperature Transmitter
Measures humidity and temp, calculates dew point and frost point, designed for industrial applications up to 356°F (180°C)
$639.00
E+E EE210 Humidity / Temperature Transmitter
High accuracy measurement of relative humidity and temperature in demanding climate control applications
$236.00
NoShok 300 Series Pressure Transducers
Compact OEM pressure transducers
$283.37
In Stock
Gems FS-4 Series Flow Switch
Makes flow protection economical for a broad range of industrial applications
$99.00
E+E EE245 Wireless Temperature / RH / CO2 Transmitter
Wireless network with up to 500 transmitters, interchangeable sensing probes, remote probes up to 33ft (10m)
$345.00
E+E EE75 Air / Gas Velocity Transmitter
Hot film sensor, high precision, measures velocities up to 8000ft/min (40m/s), high accuracy, designed for industrial applications
$1,016.00
Badger Meter Model 3000 Flow Monitor
Economical, full featured digital flow monitor
$853.00
Gems FS-380 Series Flow Switch
Compact flow switch for inline pressures up to 1500 psi
$122.00
E+E EE820 CO2 Transmitter
Dual wavelength non-dispersive infrared technology (NDIR), auto calibration, ranges up to 10000 ppm
$405.00
Badger Meter PC200 Industrial Process Controller
Designed for batching and filling any quantity as well as displaying total, accumulated total and flow rate
$948.00
GPI GSCPS Series Turbine Flow Meter
High Temperature precision turbine flow meters with sanitary clamp process connection with 3-A sanitary rating
$2,225.00
$1,780.00
Blancett B1500 Turbine Flow Meter
Highly accurate and reliable turbine flow meters offer an ideal solution for standard clean filtered liquid flow applications
$1,100.00
Gems FS-600 Series Flow Switch
Thermal dispersion technology provides a robust flow switch with no moving parts
$398.00
Brooks Quantim Coriolis Mass Flow Controllers & Meters
Low flow coriolis mass flow measurement and control, range from 0.001 up to more than 27 kg/hr, proprietary optical sensing technique
Call for pricing
Dwyer DH3 Digihelic Differential Pressure Controller
Digital display gauge, control relay switches, and a transmitter with current output, photohelic gauge style housing
$298.00
AST5100 Wet/Wet Differential Pressure Transmitter
Measure liquid or gas differential pressure from 5 inches water column up to 15 psid
$262.50
Telaire T5100 CO2 Transmitter
Low-cost, wall mount CO2 transmitter for demand-controlled ventilation applications
$172.34
$137.87
In Stock
Dwyer 641 Air Velocity Transmitter
Heated mass flow sensor precisely measures air flow over 16 field selectable ranges
$464.00
TSI Alnor AirAssure IPM2.5 Air Quality Monitor
Real time IAQ monitoring, 5 to 300 μg/m3 measuring range, light scattering photometer sensor
$995.00
$895.50
Gems FT-210 Series Turbine Flow Meter
Proven turbine technology in a small package for low flow applications
$126.00
NoShok 400 Series Needle Valve
100% helium leak tested, 10k pressure rated, Blow-out proof stem, 1/4" NPT up to 1 1/2" NPT connection options
$56.40
Telaire Humitrac XR Dew Point Transmitter
Rugged, compact dew point, wet bulb or enthalpy transmitter designed for the building automation/HVAC market
$374.75
$299.80
In Stock
E+E EE160 Humidity / Temperature Transmitter
Designed for HVAC applications, polycarbonate housing, 10 to 95% RH range with RH accuracy at 20°C ±2.5%
$211.00
E+E EE650 Air Velocity Transmitter
Hot film sensor technology, ranges up to 4000 ft/min (20 m/s), high resistance to pollution
$283.00
Badger Meter M4000 Electromagnetic Flow Meter
Non-intrusive flow meter with Class I, Div 1 hazardous location approval for almost any conductive fluid or slurry
$3,015.00
GPI G Series Turbine Flow Meter
Precision turbine flow meters with NPT, BSP or ISO process connection
$1,256.00
$1,004.80
E+E EE892 / EE893 CO2 Module
Dual wavelength NDIR CO2 working principle, measuring range up to 10,000ppm, auto-calibration
$151.00
E+E EE220 Humidity / Temperature Transmitter
Interchangeable sensing probes, remote sensing probe up to 32.8ft, measuring range 0 to 100% RH / -40 to 176°F
$338.00
Setra SRIM1 Room Isolation Monitor
Provides local audible and visual alarms to alert personnel when the pressure differential is compromised
$741.90
Gems FS-380P Series Flow Switch
Industrial strength, inline plastic flow switch
$60.00
E+E EE33 Humidity / Temperature Transmitter
Designed for high humidity and chemical applications, monolithic measurement cell type, pressures up to 1450 psi
$1,384.00
Greyline Instruments PSL 5.0 Level Controller
Pump and lift station level controller with 6 independently programmable control relays
$1,975.00
Dwyer TSW Temperature Switch
Weatherproof, single or dual stage electronic temperature control with NEMA 4X housing
$69.00
Gems FS-925 Series Flow Switch
Precision-calibrated flow switches for reliable and consistent performance
$214.00
Gems FS-550 Series Flow Switch
High pressure, metal paddle switch senses liquid flow in either direction to monitor flow/no-flow conditions
$246.00
Keller 33 X Ed / 35 X Ed Pressure Transmitter
Pressure proof housing for hazardous locations, microcontroller-based electronic evaluation to ensure maximum accuracy
$1,087.00
Setra MRMS Multi-Room Monitoring Station
Remotely Monitor up to 8 Rooms, auto discover, audible and visual alarms
$1,643.57
Gems FS-926 Series Flow Switch
Precision flow switch with 1% repeatability for low flow applications
$266.00
Mercoid MPC Jr Level Controller
Versatile level control with programmable level differential for on/off control of one or two pumps, valves, or other devices through two SPDT relays
$398.00
Keller 35X HTC Pressure Transmitter
Piezoresistive high temperature transmitter for temperatures up to 572°F (300°C)
$1,170.00
King Instrument 7720 Series Rotameter
Rugged PVC rotameters with magnetically-coupled dial-type indicator, replaces the IK55-G
$937.00
Brooks Model 1306 Variable Area Flow Meter
Glass tube variable Area flow meter, o-ring seal construction, up to 590 gph & up to 39 scfm
Call for pricing
Dwyer 1950G Pressure Switch
Explosion-proof pressure switch for compatibility with natural gas
$251.00
Greyline Instruments DLT 2.0 Differential Level Transmitter
Differential level and control plus open channel flow monitoring with two non-contacting ultrasonic sensors
$2,795.00
Vaisala GMW80 Series CO2 Transmitters
Wall-mount transmitters designed to fulfill the needs for CO2 measurements in standard demand-controlled ventilation applications
$186.00
Dwyer AT2200 Series Magnehelic Pressure Gauges
Accurate, low pressure gauge with a flameproof ATEX-approved enclosure
$951.50
Gems FS-480 Series Flow Switch
Large-body inline flow switches deliver ample flow rates with minimal pressure drop
$335.00
NoShok 100 Series Needle Valves
Compact size valve built for maximum durability and robust performance in the toughest applications
$36.88
Gems FS-927 Series Flow Switch
Compact flow switches are ideal for use where space is at a premium
$112.00
Dwyer 641B Air Velocity Transmitter
Rugged air velocity transmitter provides accurate measurements in dirty air environments
$464.00
Gems FS-10798 Series Flow Switch
Externally adjustable flow switches offer an infinite number of flow settings at pressures up to 1000 psig
$427.00
E+E HUMLOG20 Data Logger
Measurements of humidity, temperature, air pressure and CO2 concentration
$652.00
E+E EE431 Temperature Sensor
Duct / immersion temperature sensor, measuring ranges up to 302°F (150°C), passive or active output
$38.65
King Instrument 7750 Series Rotameter
Stainless steel rotameter with flange connections and optional 4-20mA transmitter
$1,137.00
Setra SRH Humidity Transmitter
Wall mount, duct mount, and outside air humidity transmitters
$139.71
Setra SRIM2 Room Isolation Monitor
Provides visual and audible alarms for pressure, temperature, humidity and door input
$880.20
W.E. Anderson BBV-0 Block Manifold
2-valve block manifold is designed to withstand repeated open/close operations
$94.00
E+E EE10 Temperature Transmitters
Designed for HVAC indoor applications, high accuracy, long term stability, 23 to 131°F temp range
$132.00
Gems FS-400P Series Flow Switch
Transparent PVC housing is ideal for use where visual flow confirmation is desirable
$91.00
E+E EE244 Wireless Temperature / RH / CO2 Transmitter
Modular wireless transmitter for temperature, humidity and CO2, up to 500 transmitters, interchangeable probes
$613.00
Gems FS-500 Series Flow Switch
Low cost flow monitoring with a variety of switch actuation points and low pressure drop
$83.00
Vaisala GMW90 Series CO2 Sensors
Carbon dioxide / temperature sensors with optional humidity measurement for demand controlled ventilation systems
$417.00
APG DCR-1006A Controller
Capable stand alone controller with 4 Relays & signal outputs for select APG Modbus level sensors
$618.29
Setra SRIMV Velocity Sensor
Monitor velocity with the option to measure and display flow, differential pressure, temperature and humidity
$693.30
Dwyer SPPM Panel Meter
16-bit color touch screen display, configurable with downloadable software, 0.1% accuracy
$118.00
Dwyer Digihelic II Differential Pressure Controller
NEMA 4 (IP66) housing, ranges as low as 0.25 up to 100 inH2O, 4 digit backlit LCD 0.6" display
$532.00
Gems FS-150 Series Flow Switch
Flow switch with a unique, dual-diameter, internal bore and piston configuration to minimize flow constriction
$101.00
Gems FS-930 Series Flow Switch
Unique piston design assures accuracy over a full range of viscosities for applications where liquids of different viscosities are blended
$247.00
E+E EE061 Humidity / Temperature Probe
4-20 mA output for humidity and a passive temperature output, polycarbonate IP65 housing
$196.00
Keller 35X HT / 35X HTT Pressure Transmitters
Piezoresistive pressure transmitter for applications in bio-reactors or autoclaves, pressure ranges of -1 up to 30 bar
$840.00
Setra SRMD Room Monitoring Display
Single or dual highly visible LCD display for viewing temperature and/or humidity parameters from up to 30 feet away
$357.06
E+E EE660 Air Velocity Transmitter
Hot film technology, accuracy down to 0.15 m/s (30 ft/min) and high insensitivity to pollution
$485.00
E+E EE451 Temperature Sensor
Wall mounted, measuring range up -40 to 158°F, passive or active outputs, ±0.54°F accuracy
$26.03
E+E EE04 Humidty / Temperature Transmitter
Miniature Humidity and Temperature Transmitter for OEM applications, high accuracy and long term stability
$115.00
Dwyer ISDP Pressure Transmitter
Intrinsically safe differential pressure transmitter for hazardous zone pressure and flow applications
$569.00
Setra Model CSS / CSC Digital Current Switches
Solid core or clamped/split care design, adjustable switch setpoints
$50.14
Badger Meter 3050 Energy Monitor
Provides an accurate measurement of total thermal energy along with temperature and liquid flow in closed pipe systems
$902.00
E+E EE046 Condensation Monitor
Condensation / dew point monitor with alarm output, 10 to 100% RH range, 90 ±3% RH switching point
$106.00
E+E EE800 CO2 / Temperature / RH Transmitter
Accurately measure CO2, temp and RH in HVAC applications, dew point calculation, auto-calibration
$266.00
Setra Model MRG Pressure Transducer
Field selectable ranges and output, universal design, IP67 rated housing
$431.07
Badger Meter Model 3700 Data Acquisition Server
Powerful data acquisition server that allows users to log data easily and efficiently
$2,205.00
Gems FS-400 Series Flow Switch
Highly accurate, general purpose flow switch with 90° flow path
$206.00
E+E EE150 Humidity / Temperature Transmitter
Designed for HVAC applications, IP65/NEMA 4 compact enclosure, 10 to 90% RH range, temp range up to 131°F
$163.00
Laurel MAGNA Series Panel Meters
Oversized display is available with digits up to 8 inches high for viewing distances up to 320 feet
$660.00
Telaire Ventostat T8100NS / T8100NSP CO2 Sensor
Commercial grade CO2 sensor with night setback override and optional slide potentiometer
$344.68
$275.74
In Stock
Keller 23 Ed / 25 Ed Pressure Transmitters
Piezoresistive pressure transmitters with pressure proof housing are approved for use in explosion risk areas of group II
$673.00
Laurel Laureate Ohm Panel Meter
Optimized for high-speed, high-accuracy resistance measurements in a production environment
$242.00
E+E EE471 Temperature Sensor
Temperature sensor with remote probe, temp ranges up to 221°F, ±0.54°F accuracy
$34.51
Gems RFS Series Flow Switch
Combines visual confirmation of flow with dynamic, electronic switch operation
$242.00
E+E EE441 Temperature Sensor
Strap-on sensors designed for round ducts or pipes, passive or active outputs, ±0.54°F accuracy
$29.98
E+E EE80 CO2 Switch
Non-dispersive infrared technology (NDIR), measuring ranges up to 5000 ppm, auto-calibration
$238.00
E+E EE85 CO2 Switch
Duct mount, non-dispersive infrared (NDIR) technology, measuring range up to 10000 ppm
$294.00
Keller 25 HT Pressure Transmitter
Fits 19 mm (3/4”) manifold pressure ports for applications in bio-reactors or autoclaves
Call for pricing
Setra Model MRC Pressure Transducer
Ideal for critical environments, field selectable range and outputs, universal design
$682.67
Laurel Laureate Process Meter & Flow Totalizer
Rate, analog square root, batch control, time based on rate from 0-1 mA, 4-20 mA or 0-10 V signals
$252.00
NoShok Series 1950 Digital Indicator
Full-sized panel meter features compressed into small design for ease of installation
$352.15
NoShok 1900C Digital Indicator
Compact digital indicator displays any unit of pressure, temperature, level, force or flow measurement
$389.71
NoShok 2200 Series Digital Indicator
Accepts a wide variety of input signals including thermocouples or RTDs, current, voltage, resistance and process signals
$916.03
E+E EE461 Cable Temperature Sensor
Passive temperature measurement, IP65 / NEMA 4 protection class, cable lengths up to 32.8ft (10m)
$13.80
Setra CTC Series Current Transducers
Clamped split core design, slide switch for selectable amperage ranges of 30, 60, 120A
$144.33
Setra SRAN Remote Annunciator
Allows indication of room status at remote locations
$241.03
E+E Omniport 30 Multi Function Monitor
Handheld, continuous and single-point data logging, 23 parameters, capacitive TFT touch-screen
$785.00
E+E EE242 Wireless Base Station
Base station for up to 500 wireless transmitters, ethernet interface, 4-line display
$1,071.00
E+E EE871 CO2 Probe
CO2 probe with Modbus RTU interface, measuring range up to 10,000 ppm, dual wavelength NDIR principle
$585.00
E+E EE03 OEM Humidity / Temperature Module
OEM applications, digital two wire output, interchangeable plug-in design, traceable calibration
$96.00