Chiếu sáng + báo động đa chức năng truyền thống đài phát thanh cuộn dây điều chỉnh tần số FM Radio Kit sinh viên giảng dạy các bộ phận

functional traditional radio coil frequency adjustable FM radio kit student teaching partsThe module chip model is random; The numbering of different batches is differentPower supply from DC3V to 3.6V (not higher than 3.6V)Size 6.4 * 4.7 * 1.4CMSpeaker: 4 ohms 0.5W to 1WFM：88-108NHzSecurity alarm call (self-locking switch, opens alarm when pressed)Three level switch controls two low-power LED lights (which can be used as flashlights),This product is suitable for school teaching and student DIY use (as shown in the relevant diagram below)Weld the 8 pins on the motherboard to the potentiometer, power supply, and speaker; External low-power LED lightDeclaration: A small antenna (electronic wire) is soldered onto the shipping motherboard; Excluding (connecting wires, potentiometers, batteries, speakers,LED); Radio chip 1088 or 9088 (randomly shipped), amplifier chip 2822;The shipment does not include electronic banks, potentiometers, and speakers(Only soldering the electronic wires of the antenna)