"2-wire Heat detector

Power supply non-polar input DC 9V~35V              
Low standby current.              
Anti-EMI and Anti-RFI.             
Adopt SMT   
Temperature rising speed alarm(8-15°C/MIN)          
or Fixed temperature alarm 135°F(57°C).              
Alarm Output: Remote LED indicator               
Dimension: Φ100*48mm.              
Execute criterion: GB4716,EN54-5,UL521