Ceiling or wall mounting
Gives loud 85dB alarm sound.
Humidity:10﹪~85﹪
Potential early fire detect and auto alarm;
Temperature trigger: 55±5℃;
Operation ambient: 0~60℃
9V battery included 
Product size: 107*107*37.5mm  
Box Size:125mm x 110mm x 55mm
Weight:0.22kg
Carton size: 57.5cmx27cmx30cm   50pcs/ctn
GW/NW: 11kgs/12kgs