1. 3 digit number display 2. 7 segment display receiver 3. 433.92mhz wireless receiver 4. Aluminum Alloy Shell
1. USB connect to PC to manage the calling number 2. 7 segment number display 3. 433.92mhz wireless receiver 4. High strength ABS material cover
1. 50 capacity number display 2. 433.92mhz wireless receiver 3. Aluminum Alloy Shell
1. 32 capacity number display 2. 433.92mhz led display panels 3. High strength ABS shell
1. 32 capacity number display 2. 433.92mhz touch screen display 3. High strength ABS shell 4. Touch screen
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