Detailed Product Description Specifications: 1. Number of sensor:2/ 4 sensors 2. Beeping alert: BI BI BI 3. Operating voltage: 10.8-15V 4. Power: 2W(max) 5. Ambient temperature: -40oC~ +80oC 6. Buzzer volume: ≈80db 7. Detection distance : 2.0M (max) 8. Human body detection distance: 1.2-1.5M Inner packing: Box dimensions: 342 x 225 x 67mm /285 x 205 x 70mm N.W.: 0.45kg G.W.: 0.80kg Outer packing: Carton dimensions: 435 x 300 x 380mm G.W.: 10.5kg we will design packing according to your demands.