Specifications: SONOFF SNZB-01P is a small Zigbee wireless smart switch that can even fit in your pocket, with preset actions for single press, double press, and long press to control multiple devices. Compared with SNZB-01, SNZB-01P has improved design and performance. With a larger button area, 5 years battery life, external pairing button, the battery is easier to install and replace. SNZB-01P can be placed wherever your need, or stick with Adhesive and a metal plate on a flat surface anywhere, then create a smart scene, like turning off all devices with one lick. Two-way control is even available for you to turn on/off the light from two locations. Besides, The SNZB-01P can also be used as a doorbell when connected to the NSPanel Pro, you will be notified when visitors press the wireless switch. SNZB-01P is battery-operated, your mobile phone will receive a low-battery notification when the remaining battery level is low. SNZB-01P support checking 3 months' history.SNZB-01P can be placed wherever your need, or stuck with Adhesive and a metal plate on a flat surface anywhere. Description: Model: SNZB-01P Wireless connection: zigBee (IEEE 802.15.4) Battery model: CR2477(with) Working temperature: -10°C~60°C Material: plastic colour: white Package Contents: 1 x Smart Scene Wireless Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.