Sonoff DW2-RF Door/Window Opening Sensor RF433MHz

Sonoff DW2-RF RF433MHz Door/Window Opening Sensor Sonoff DW2-RF is a wireless universal door/window opening detector - reed switch. It is extremely energy-saving to ensure long operating time without the need to replace the battery. This product is designed for the eWiLink app, but it can also be used with other systems based on RF433Mhz communication, including as a remote control to trigger other devices within range. Specifications Manufacturer: Sonoff App: eWelink (requires RF gateway!) Model: DW2 RF Power Supply: MN27 (A27) 12V battery (not included!) Battery life: about 2 years - very energy-saving Communication: RF 433 MHz Protocol: EV1527 Quiescent current: ≤40μA Emission current: ≤15mA Operating systems: Android 4.1 & iOS 9.0 or higher Operating temperature: -10℃ to 40℃ Dimensions: 70 x 31 x 19 mm Easy installation with double-sided tape: Battery status alerts: Ability to write scenarios: Alert history in the app: Dimensions: The set includes: Sonoff DW2-RF x1 User manual x1 Visit our blog for more interesting solutions and articles. We also invite you to like our Facebook page to stay up to date with electronics. elty electronics and you