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Specifications :

• Product Model - DW-S03D
• Dimensions - 41 × 22 × 11 mm (1.61 × 0.87 × 0.43 in.)
• Operating Humidity -  0 - 95%RH, non-condensing
• Battery - CR1632
• Max Detection Distance - 22mm
• Wireless Protocol - Zigbee 3.0
• Operating Temperature -  -10℃~+45℃ (14℉~113℉)
• Battery Life - 2 years

Descriptions :

• Detects door or window status in real time 
  - Detects unauthorized door and window openings.
  - Turns on/off the lights, the fan, or curtains when the window or the door is opened.
  - Compact and rugged, easy to install and set-up.

What's in the box :

• Sensor Unit x 1
• Magnet x 1
• Quick Start Guide x 1