| Frequency Range:2.4 - 2.4835 GHz, Build in Antenna, Receive Sensitivity:–75dBm (typical),
 TX Power:4dBm maximum (class 2),
 Range:>10 meters (line-of-sight),
 Supply Voltage:2.7V to 3.3V,
 Power Features:3 x AA Alkaline battery cells,
 Operating Channels:79 channels of 1MHz BW,
 Security:Full support of Bluetooth security provisions 
      including hardware support for full length 128 bit encryption keys,
 Operating Temperature:-10℃(14℉) to 85 ℃(185℉),
 Storage Temperature:0℃(32℉) to 55℃(131℉),
 Operating Humidity:20% to 90% RH,
 Size:445mm(L) x 195mm(W) x 44mm(H)l
 Membrane Connection: 8 x 18 matrix membranel
 Certifications:CE,FCC
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