eBay

HYDROGEN GAS ALARM - WITH RELAY; PROPANE GAS ALARM - WITH RELAY
: HOH HH0 GAS ALARM - WITH 10 amp + RELAY; Runs on 9 volt battery or 110VAC or 220 VAC
Hydrogen Gas Alarm Detector with built in relay switch. - YouTube Video will open in a new window Using the eBay App? Paste link into a browser window: [isdntekvideo]

Help prevent devastating RV battery charging explosions!

Get a Hydrogen gas alarm now. Mount it inside the inside roof of the battery charging chamber compartment for instant warning and automatic cut off of the charging input cable.

Must use a large external solenoid to handle the power cable.

The small 10 amp relay inside the hydrogen detractor is only there to actuate the larger solid relay (sold separately)

Features On-board automatic re-charger (Rechargeable 9 volt transistor battery not included) Uses only a 9 volt rechargeable type battery!); Normally open relay can turn off incoming charging electricity thus preventing
more Hydrogen gas from forming or it can also start up a sealed ventilation blower.; For H2 gas detection mount alarm unit on ceiling of compartment to be monitored.
For Propane gas detection mount unit on floor level of compartment to be monitored.; Specifications:
Power consumption 4 watts.
10 minute self calibration period.
10 amp relay* for closing solenoids, fans or gas valves (Normally open - Closed on alarm)
Comes with normal open relay to turn off gas valve or turn on alarm on activation.
Relay can also be used for activating all types of relays on central alarm panels, sirens, etc.
Temperature operation range - 10 to 118 degrees F.
Protect battery charges area from explosion danger.
Sensor / Pd/Si, heater and H2 ion reference element.
Includes 3 foot cord for direct wire installations 9VDC /110, 220 VAC (50/60htz) plug-in option.
Auto reset at < 5 ppm gases plus up to 15 minutes to clear gas saturation from element.
Response time for alarm / 20 seconds for 100+ PPM - 10 seconds for 1000+ PPM
Alarm instantly on at 2000 PPM! 4 digit LED meter reads up to 9999 PPM then shows infinity.
Operation range (Humidity) - 0% to 96% max.
Flash proof wire screen for anti-ignition safety.
9 volt battery back up port with build in re-charger**; Control Panel:; Digital readout meter.; Alarm test button.; *Can be used for closing circuit for turning on alarms and shutting off gas values.; Relay not to be used for high amp loads like vent fans, motors or inductive loads.; Use a slave relay for operating higher amp loads!
: **For optional emergency battery operation simply install a 9 volt rechargeable transistor battery into this detector. MUST BE A RECHARGEABLE TYPE BATTERY!

: Digital Hydrogen Gas Detector; Digital Hydrogen Gas Alarm; Digital Hydrogen Gas Sensor; The world's most reasonably; priced Hydrogen Gas Detector!; Protect your battery charging areas from explosions!; Protect from Browns Gas or HHO explosions!; Model #HRT110/9 - 110/9 Volt AC Version; W/ 9 volt back up.; Runs on 9VDC/110VAC and 220VAC; Ultra low H2/Prop alert level with relay!
: When Hydrogen gas or browns gas or HHO is leaking the #HRT series alarm will let you know it fast!; Use for protecting against hydrogen leaks in appliances, HHO generators or battery overcharging.; Place close to H2 source and close to the ceiling since H2 rises.; Features a loud 80 Db alarm and 10 amp relay that are both; activated when hydrogen gas levels reach as low as 2000 PPM or higher
Runs on 9VDC / 110-125 VAC + 208/240 VAC (auto sensing) and has slot for 9 volt rechargeable battery (not included): Includes female relay plug and wall mount, mollies.; 9 volt battery will be automatically recharged during power outs and can operate; unit for several days in an emergency! These 9 volt power feature also makes this unit; portable and is easily converted to D.C. power applications in vehicles and other remote jobs.