The Sonoff SNZB-04, a ZigBee Wireless Door/Window Sensor
Sonoff SNZB-01 - ZigBee Wireless Switch
Sonoff CC2531 ZigBee USB Dongle
Sonoff SNZB-02 - ZigBee Temperature & Humidity Sensor
Sonoff SNZB-03 - ZigBee Motion Sensor