?Forecum <br />             <strong>Model :</strong> Forecum 6 <br />             <strong>Material :</strong> ABS£¬ Electronic components                               <strong>Power Supply :</strong> 220V US Plug <br />             <strong>Transmission Frequency:</strong> 315MHz <br />             <strong>Unobstructed Effective Range :</strong> More than 100m                               <strong>Power Requirements :</strong> 12V (Battery Model: 23A 12V - included) <br />             <strong>Transmission Frequency:</strong> 315MHz <br />             <strong>Unobstructed Effective Range :</strong> More than 100m <br />             <strong>Operating Temperature (¡ãC):</strong> -10 - 50 deg. C <br />             <strong>Dimensions (L x W x H):</strong> 8.4 x 6.0 x 2.3 cm / 3.3 x 2.4 x 0.9 inches                               Array             <strong>Package weight:</strong> 0.235 kg <br />             <strong>Product size (L x W x H)  :</strong> 8.4 x 6 x 2.3 cm / 3.30 x 2.36 x 0.90 inches <br />             <strong>Package size (L x W x H)  :</strong> 10.3 x 8 x 6.5 cm / 4.05 x 3.14 x 2.55 inches                               <strong>Package contents:</strong> 1 x Forecum 6 Wireless Water-resistant Doorbell Transmitter£¬ 1 x Forecum 6 Wireless Water-resistant Doorbell Receiver£¬  2 x Sticker£¬ 1 x 23A Battery£¬ 2 x Screw£¬ 1 x English User Manual                 <img alt="Forecum 6 Wireless Remote Control Doorbell Kit Water Resistant Transmitter + Receiver 100M Transmission Range" src="http://des.chinabrands.com/uploads/2014/201408/heditor/201408211213323985.jpg" /><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508081532392791.jpg" alt="Forecum 6 Wireless Remote Control Doorbell Kit Water Resistant Transmitter + Receiver 100M Transmission Range" /><br />&nbsp;