The HS-712TX(R) is a small, battery-powered handheld transmitter operating in the license- and fee-free ISM band. Its transmission power is 10 mW. It is powered by a 9 V block battery or rechargeable battery. A key feature is that the transmitter consumes no power in standby mode. It is equipped with a membrane keypad featuring 12 keys, standardly including the digits 0–9 and the C and E keys. Custom keypad overlays are available upon request.

Commands are transmitted using the FFSK (Fast Frequency Shift Keying) method. Data telegrams are secured with a CRC (Cyclic Redundancy Check) to prevent transmission errors. The Hamming distance of the telegram security is 4. Additionally, data telegrams are protected with a customer-specific address, ensuring that even an identical HS-712TX(R) from another customer cannot interfere with the system.

Up to 240 sub-addresses are possible per customer address, which can be assigned to the transmitter and receiver via a programming function. Configurations where multiple transmitters communicate with one receiver or one transmitter communicates with multiple receivers are also supported.

Data of HS-712TX(R)/RX hand held radio transmitter with feedback