HKT-80BK is a highly cost-effective wireless voice intercom and data transmission module (send text messages or data communication, baud rate up to 19200), built-in high-performance RF transceiver chip, a microcontroller and RF amplifiers. External controller module parameters can be set via a standard asynchronous serial interface (RS232) communication and control of the entire transceiver module. Products mature and stable, compact and exquisite workmanship, high integration, the module only an external antenna, MIC and voice amplifier to form a complete digital radio or walkie-talkie. Not only has 38 CTCSS, there are 83 others that are not CDCSS for extended channels. ZTE has been well-known domestic enterprises to employ more than 90,000 units on the phone used to increase the intercom function.

Features:

• Frequency Range: 400 ~ 470MHZ
• Frequency Step optional: 5K/6.25K/12.5K/25K
• RF output power: 1W
• Voice encryption: (scrambling) function (8 choices)
• Send and receive SMS text message function, rate of 9600 baud
• Built-in CTCSS (38 groups), CDCSS (83 groups) codec
• Automatic cancellation tail function
• Digital Volume (1-8 grade) adjustable
• Voice speakerphone function (0-8 grade) adjustable
• Squelch level (0-9 grade) adjustable
• MIC software adjustable sensitivity (1-8 grade)
• High receiver sensitivity: -122dBm
• Ultra-low-power sleep mode (0.1uA)
• Voltage operating range: 3.3 ~ 5.0V
• Ultra-small size: 18 x 35 x 3.2MM
• Communication distance: up to 5 km open land
• Application areas: Portable intercom and paging systems, wireless data transmission, mobile phones, and other products designed to embed a new walkie-talkie feature.

Please Note: please buy 2pcs modules to build a communication as a single pc can't do anything.