| Brand | Ring |
|---|---|
| Type | Door Sensor |
| Power Source | Battery |
| Color | White |
| Item Diameter | 2.5 in |
| MPN | 4SD1SZ-0EN0 |
| Features | Wireless, Battery-Operated, No Tools Required |
| Material | Plastic |
| Operating Sound Rating | 130 dB |
| Country of Origin | China |
Check the listing for details. Ring Alarm Contact Sensor (2nd Gen) - White. Color: White, Condition: New, Made in China. Listed at 9.95 USD. Ring Alarm Contact Sensor (2nd Gen) - White