alarm clocks
kidde hd135f heat alarm thermistor red led
heat alarm detection method thermistor yes interconnection capability power source 120vac 9v audible alert 85db 10 ft. horn visual alert red led diameter 5 in . height 2 in . digital readout no battery backup yes features interconnectable to smoke alarms for protection of garages and attics hush button no locking pin yes operating temp . 20 degrees to 100 degrees f standards ul 217 manufacturers warranty length 10 yr . br b features b ul li battery backup yes li li features interconnectable to smoke alarms for protection of garages and attics li li height 2 li li item heat alarm li li operating temp . 20 degrees to 100 degrees f li li digital readout no li li hush button no li li power source 120vac 9v li li manufacturers warranty length 10 yr . li li standards ul 217 li li test button yes li li locking pin yes li li diameter 5 li li audible alert 85db 10 ft. horn li li detection method thermistor li li interconnection capability yes li li visual alert red led li ul