Weatherproof Alarm

Electrical Specifications

  • 120VAC, 60 Hz, 1.3A
  • Switch inputs at terminals 3&4, 5&6, 7&8, 9&10
  • Relay outputs at terminals 11&12, 13&14, 15&16, 17&18
  • Wire Range is 20-10AWG
  • Horn — 95 dB @ 10 feet.
  • Temperature Range is -40°C to 90°C


AL201 Overfill Protection Device Weatherproof Alarm
Part No.: AL201-1-4-4R-HTR Weatherproof Alarm

The Model AL201-1-4-4R-HTR is a weatherproof low temperature alarm panel that accepts four switch contact inputs and provides an alarm signal when the external contacts are closed and an audible alarm signal for the FULL alarm when closed. The white pilot light indicates the 120 VAC power. The TEST push-button is a momentary button that turns on the four red lights and the horn. The red pilot lights provide the visual alarm indication for each alarm contact. The MUTE push-button is a momentary button that mutes the horn for the FULL alarm input. In the event of a power failure the alarm will come back on with the power. The red light remains on until the alarm condition is corrected. The alarm circuit resets automatically. The panel also has a relay dry contact output for each switch input. It must be mounted in a non-hazardous location. Use Ktech float switches for the alarm input contacts. The panel is ULC Type 4 rated (Equivalent to Nema 4).



  • CAN/ULC-S661-10

Certified to CSA C22.2 No.205 and Conforms to UL2017