FIBARO The Button FGPB-101

Battery type: ER14250 ?AA 3.6V
Battery life: est. 2 years (with default settings and max. 10 pushes per day)
Operating temperature: 0 ? 40?C (32 ? 104?F)
EU standards compliance: RED 2014/53/EU
RoHS 2011/65/EU
Radio protocol: Z-Wave (500 series chip)
Radio frequency: 868.4 or 869.8 MHz EU;
908.4, 908.42 or 916.0 MHz US;
921.4 or 919.8 MHz ANZ;
869.0 MHz RU;
Radio transmit power: up to 1 dBm (EIRP)
Range: up to 50m (164 ft) outdoors
up to 40m (131 ft) indoors
(Depending on terrain and building structure)
Dimensions
(diameter x height): 46 x 34 mm
(1.81? x 1.34?)