Price: $7.99
(as of Jun 05,2023 03:05:48 UTC – Details)
💎【Magnetic Alarm】:Integrated circuit IC (K9561 or CL9561) made of microelectronics technology stores four kinds of sounds: fire truck sound, police car sound, machine gun sound and ambulance sound. Get different sounds.
🎯【Introduction of key components】：
🥇VT1 and VT2 mainly constitute a multivibrator, and VD1 and VD2 flash alternately after power-on.
🥈After the four-sound alarm is also powered on, the output alarm signal is amplified by VT3 and pushes the speaker BL to work, thereby producing a loud alarm sound. When the magnet is close to the “reed switch”, the alarm does not emit sound or light, and once the magnet is far away from the alarm, it will alarm in sound and light, which can constitute a burglar alarm with flashing lights.
🍀【DIY Soldering Kit】: It is widely used in schools to help students learn basic mechanical and electronic skills.There are many life scenarios for this circuit application, and it is a kind of circuit that circuit designers need to master.
🍀【Easy Assembly】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. Even beginners can easily solder successfully.
📞【Wholesale business】:We have been engaged in the wholesale and retail business of electronic related products for a long time. Welcome letter to discuss wholesale business. The larger the amount, the better the price.
🎯【Introduction of key components】：
🥇VT1 and VT2 mainly constitute a multivibrator, and VD1 and VD2 flash alternately after power-on.
🥈After the four-sound alarm is also powered on, the output alarm signal is amplified by VT3 and pushes the speaker BL to work, thereby producing a loud alarm sound. When the magnet is close to the “reed switch”, the alarm does not emit sound or light, and once the magnet is far away from the alarm, it will alarm in sound and light, which can constitute a burglar alarm with flashing lights.
🍀【DIY Soldering Kit】: It is widely used in schools to help students learn basic mechanical and electronic skills.There are many life scenarios for this circuit application, and it is a kind of circuit that circuit designers need to master.
🍀【Easy Assembly】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. Even beginners can easily solder successfully.
📞【Wholesale business】:We have been engaged in the wholesale and retail business of electronic related products for a long time. Welcome letter to discuss wholesale business. The larger the amount, the better the price.
