Handheld Digital Wireless Audio Intercom

1.Brand Name: TA 2.Model Number: TA222D 3.Type: Handheld 4.Dimensions: L*W*H=21.5cm*10.5cm*7cm 5.Storage Channel: 100 6.Talk Range: about 500M in open land 7.Key function: Full-duplex voice intercom Handheld Digital Wireless Audio Intercom 500M 200mA Battery For Villa Description: Function Features: 1.Using 2.4G ISM public frequency band: 2403-2485MHz 2. doorbell transfer data rate: 250K 3. Transmitting Power: Less then 20dBm(Less then 100mw), Receive Sensitivity: -100 or