Starting at $186.00
  • Usually ships in 4-6 business days



  • UV stabilized for outdoor use
  • Snap latch with lockable hasp
  • Continuous cover hinge
  • Fiberglass material is easily punched or drilled for conduit connections
  • Includes feet and screws for flush mounting to a wall
  • Rating: NEMA 1, 2, 3, 3R, 4, 4X, 12 and 13


The Mercoid A-900 and A-901 are the perfect instrument housing for indoor and outdoor applications. The enclosures protect controls from dirt, dust, oil and water. Both units are rated weatherproof type NEMA 4X and have a fully gasketed cover. Standard features include a lockable latch to prevent tampering and flush mounting hardware.

The Mercoid A-900 comes standard with a 1/4 DIN cut out in the front cover. Controllers mount with the front face exposed for easy access to the programming buttons. Mercoid controllers feature weatherproof NEMA 4X rated front panels and gaskets enabling the control to be weatherproof protected when installed in the A-900 even though the front face is exposed. Wiring an installed controller is easy due to the hinged cover and spacious clearance for the control to swing out with front cover. The lockable latch prevents unauthorized removal of the control from the enclosure.

The Mercoid A-901 comes standard with a clear plastic front window and mounting hardware to install the controller inside the box. Controllers mount just behind the window assuring easy viewing. Mounting the controller inside the enclosure protects the control face from corrosive atmospheres or from being covered in oil, dirt and dust. The lockable latch prevents unauthorized removal of the control and removes access to the control programming buttons. The mounting hardware is attached to the rear of the enclosure and includes a bracket with a 1/4 DIN cutout and standoffs long enough for Mercoid controllers to fit. Control programming buttons are easily accessible by just opening the front cover.