1. Model: DRD487
2. Color:Grey 
3. Operating Voltage:AC(50~60hz)110~220V            
4. Material:ABS plastic+PCB board
5. PAD Dimension:235*235*15mm
6. Hole Dimension:220*220mm     
7. Decoding height:5~20cm
8. Alarming with sound
9. 1pcs/box 10pcs/ctn
10. 28*48*37CM of carton size