The smart Walkie-Talkie radio kit combines intercom and radio functions, meeting your dual needs for wireless communication and radio listening. (Note: Two Walkie-Talkie form a pair; a single intercom can function as a radio, but not for intercom use.). Equipped with a transceiver chip for clear voice intelligibility, the intercom operates in the 409.85MHz frequency band and has a range of approximately 200 meters. Equipped with an 87-108MHz radio frequency band, it offers low noise, strong anti-interference capabilities, automatic radio station search and storage, and easy operation. The SMD components are pre-soldered; You need your own soldering tools for soldering through-hole components. Max operating current: Approximately 200mA (at maximum volume) Power supply: 3xAAA batteries or 5V USB (batteries not included; both cannot be used simultaneously) Walkie-Talkie Features:1. Automatically detects and receives signals when no operation is performed. 2. the "Intercom" button to initiate a voice conversation. 3. the "Call" button to initiate a ringing tone on the receiving intercom. 4. Intercom signal strength can be checked. 5. Intercom operates on the 409.85MHz frequency band. 6. Intercom communication range is approximately 200 meters. Radio Features: 1. Automatically searches for and stores nearby stations when no stations are stored.(Up to 30 stations can be stored; additional stations cannot be stored.) 2. 15 volume levels for flexible volume adjustment. 3. Power-off memory, automatic station search and save functions, and station list management. 4. Sleep mode for optimal power conservation. 5. Radio reception frequency range: 87-108MHz. 6. Adjustable search channel threshold. 7. Station signal strength can be checked. Color: Black & Transparent Material: PCB+Components+plastic Package Contents: 2 x Smart Intercom Radio DIY Kit with Case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.