These negative resistance-type sensors raise the temperature as resistance goes down.
Photo cells are light sensors with variable resistance. Use for control of electronic circuits.
Photo cells are light sensors with variable resistance. Use for control of electronic circuits. Minimum order of 3.
Use infrared sensors for remote control or fiber optics.
Double-coil bell for house entrance doorbells. 6-10V AC, 3-6V DC.
Buzzer with PC board mounts. 80dB, 6 - 9 V DC.
Buzzer with wire leads. 80 dB, 6-9 V DC.
3-16 V DC, 80 dB, 7 mA, 0.6 in. dia., 0.3 in. high
Magnet switch with magnet.
Sensor switch encased in a metal can.
Frequency: 40kHz. Aluminum flower case. Set.