Super Tiny Size: This smart light switch is 40% smaller than the SONOFF ZBMINI smart switch. The size is 3.95 x 3.3 x 1.68 cm, which suits any standard junction box installation. ZigBee 3.0 Protocol: SONOFF ZBMINIR2 is a ZigBee 3.0 smart switch that needs to be used with a ZigBee hub.
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