Product Options for
Ammonia Leak Detectors and Monitors



The Indoor/Outdoor remote alarm light & horn unit is a waterproof light tower that provides a brighter light via a combination of long-life LEDs and a day bright lens. Other features include a Test/Normal/Silence toggle switch, an omni-directional horn, safety yellow NEMA 4X enclosure, an internal terminal strip to terminate the 24 VDC power supply (provided by others) and the normal-closed contact of the detector(s). The operation of this unit allows for a remote indication (i.e. red flashing light and pulsing horn) of an Alarm condition. During an Alarm condition, the Remote Alarm Light & Horn Unit can be silenced with the Silence/Normal/Test toggle switch.

However, the red light will continue to flash. Once the Alarm condition is resolved, the horn will sound again until the Silence/Normal/Test toggle switch is put back into the Normal mode. Our standard Indoor/Outdoor remote alarm light & horn units are flashing red light with pulsing horn, rotating yellow light with staccato horn, and steady blue light with steady horn. We can customize this unit to include, but not be limited to, the number of lights, the color of the lights, different horn types, and/or remove the Silence/Normal/Test toggle switch.

Remote Alarm Light and Horn Unit Part Numbers:

18 to 36VDC input power

  • IO-RAL-HU-50-SW - Indoor/Outdoor REMOTE ALARM light & horn unit with 50 ft. of cable & switch
  • IO-RAL-HU-SW - Indoor/Outdoor REMOTE ALARM light & horn unit with switch & NO cable
  • IO-RAL-HU-50 - Indoor/Outdoor REMOTE ALARM light & horn unit with 50 ft. of cable & NO switch
  • IO-RAL-HU - Indoor/Outdoor REMOTE ALARM light & horn unit only with NO cable or switch - 24VDC or AC

100 to 240VAC input power       

  • IO-ACRAL-HU-50-SW - Indoor/Outdoor AC REMOTE ALARM light & horn unit with 50 ft. of cable & switch
  • IO-ACRAL-HU-50 - Indoor/Outdoor REMOTE ALARM light & horn unit with 50 ft. of cable & NO switch
  • IO-ACRAL-HU-SW - Indoor/Outdoor AC REMOTE ALARM light & horn unit with switch, No Cable
  • IO-ACRAL-HU - Indoor/Outdoor AC REMOTE ALARM light & horn unit with no cable or switch


When an alarm condition occurs, the High Output Horn and Strobe from Cool Air Incorporated can be used to inform personnel of an ammonia leak, thereby protecting the health and safety of employees working at the facility. Per industry standards, an audible alarm providing leak notification shall be capable of achieving a sound pressure level of 15 decibels (dB) above the average ambient sound level and 5 dB above the maximum sound level of the area in which it is installed. This alarm light and horn is specifically purposed to be used in areas that are especially loud, with a powerful 117 dB(A)audible alarm horn. This horn and strobe is a great choice for noisy engine rooms, process areas, busy docks, etc.


  • Great for engine rooms and other areas with loud equipment
  • Available in multiple voltage configurations to meet the application needs
  • Separate circuits for the horn and strobe providing multiple wiring options
  • 80 different field adjustable tones
  • Bright Xenon strobe light

High Output Remote Horn/Strobe Part Numbers:

    • HO-REM-HU-ST-24 – High Output Remote Horn and Strobe, 24VDC version
    • HO-REM-HU-ST-120 -High Output Remote Horn and Strobe, 120VAC version
    • HO-REM-HU-ST-230 -High Output Remote Horn and Strobe, 230VAC version
High Output Remote Horn Strobe


The Remote Sensor option allows you to locate the solid state or electrochemical sensor of the LBW-50, LBW-420/420-1 or LBW-Watchman ammonia leak detectors up to 500 ft. away from the detector box. This gives you the safe advantage of remotely reviewing and acknowledging the Low Alarm and/or High Alarm externally from the source of the alarms. The Remote Sensor comes standard with a NEMA 4X box, and 50 feet of shielded cable. Additional cable or no cable can be purchased at time of sale and the sensor will be calibrated at the factory for the length of cable specified. In the event no cable is ordered, the detector will be calibrated with a temporary 50 foot cable.

Part numbers: (order with suffix SS, solid state sensor or EC, electro chemical sensor

  • LBW-420/50-RS - LBW-420/50/Watchman remote sensor with  NEMA 4X box NO CABLE
  • LBW-420-RS-50 - LBW-420 remote sensor with 50 ft. cable & NEMA 4X box
  • LBW-50-RS-50 - LBW-50 remote sensor with 50 ft. cable & NEMA 4X box
  • LBW-WATCHMAN-RS - LBW-WATCHMAN remote sensor with  NEMA 4X box NO CABLE - include cable adaptor for watchman
  • LBW-WATCHMAN-RS-50 - LBW-WATCHMAN remote sensor with 50 ft. cable & NEMA 4X
  • LBW-420/50/Watchman-RS-____  - LBW-420,-50,-Watchman additional remote sensor cable (51 to max. 500 ft.); specify desired length


The ABS Wash-down/Utility Tube has multi-functional use. It was primarily designed for use in wash-down areas, for remote sensor applications, in HVAC units/ductwork, and for outdoor applications. It can be installed directly onto the LBW-50, LBW-420, LBW-Watchman, or a remote sensor. ABS-WDT-SS access door allows the test bottles to be used for the recommended monthly testing, the annual leak detector calibration, and for the easy replacement of the ammonia sensor when needed.

The ABS-WDT-EC is a 1/4 turn on, 1/4 off over the electrochemical sensor.



The Battery Back-Up can be added to the LBW-50, LBW-420/420-1, or LBW-RLV ammonia leak detectors. If a power outage should occur, the battery provides approximately 1 1/2 hours of continuous back-up power to the leak detector for monitoring. The Battery Back-Up is on a constant trickle charge during normal operation. The standard Battery Back-Up comes with a battery, mounting Velcro, and a wiring harness with black & red leads.



    • The LCD door monitor allows for displaying the PPM ammonia concentration from a single LBW- 420/420-1 or LBW-Watchman in up to two other locations. This option was designed utilizing the 4-20 mA output signal of these units. The LCD door monitor requires 24VDC (16 to 32VDC) power.

LCD Door Monitor  Part Numbers: 

    • DM-LCD-50 - Door Monitor with LCD display & 50 ft. of cable
    • DM-LCD - Door Monitor with LCD display & NO cable


The IP Sensor Appliance incorporates a web server and analog/digital inputs. Power the appliance with a 24 VDC power supply (provided by others), plug it into a hub/router, launch any web browser, punch in the default IP and connect. No custom software to load, no discovery routines, no custom cables, or training. The IP Sensor Appliance serves up static web pages with dynamic data updates every second or two. Most users can set up and utilize the appliance without any training or support in less than 5 minutes due to the innovative and familiar web browser based configuration. The IP Sensor Appliance is an ideal low cost solution for remote monitoring applications like ammonia leak detectors. Up to two personnel can receive email alerts (NOTE: this feature uses port 25) so that corrective action can be taken. The data logging feature of this device can indicate which detector is activated, the ammonia concentration in PPM, and provide a date & time stamp of the event.




Kit includes:
(2) slide on stainless steel latches
(2) plastic hole plugs



For use on new LBW-420's and LBW-50's - Can also replace screws on detectors already installed in the field