1 hour ago
1
The Ring Alarm Contact Sensor is priced at $11.99 today at eBay, which is $3 cheaper than what Amazon charges (and it's all-time low). Buying two drops the per-unit price to $11.75, and four or more brings it to $11.39 each. Shipping is free no matter how many you buy. Buy Now at eBay
Features
- Wireless, battery-operated door/window sensor
- 2.5" diameter
- 130 dB operating sound rating
- No tools required for installation
- Compatible with Ring Alarm system (2nd Gen)
