[futurekit]4 LED FLASHER (FK1221) [상품코드: 1160248]
This kit is an astable Multivibration oscillator principle which can generate a frequency. The kit's feature is alternately turning 2 sets of LEDs, ON and OFF. In addition, the flasher rate is able to be adjusted by trimmer potentiometer.
[futurekit]3 LED DUAL COLOR FLASHER (FK1222) [상품코드: 1160253]
This kit is an Astable Multi vibration oscillator principle which can generate frequency. The FK1222 is an alternately flashing light circuit of 3 DUAL-LEDs, RED and GREEN. In addition, the flasher rate is able to be adjusted by trimmer potentiometer.
[futurekit]2 LED NIGHT LIGHT (FK1224) [상품코드: 1160256]
This kit is designed on the principle of ambient light falling on the light sensitive junction of the photo transistor. The FK1224 is able to automatically turn ON the light in night time. On the other hand, it can turn OFF the light in day time. The 2 LEDs work when the circuit turns ON and OFF in sequence. In addition, the sensitivity value of the photo transistor is able to be adjusted by trimmer potentiometer 500K.
[futurekit]ELECTRONIC SIREN WITH LED (FK1226) [상품코드: 1160257]
This kit is designed on the principle of 2 transistors which can generate frequency when pressing and holding the switch for turning ON this circuit, then it gives out ademanding of single siren sound through its included speaker, and LED lights up, making itsuitable for alarm- system device.