Light and Optical Sensors

5mm 5537 type photoresistor for detecting light intensity in electronic and automation projects, supports up to 150VDC and 150mW, has peak sensitivity at 540nm, resistance 18-50 Kohm at 10 lux and 2 Mohm in the dark, with fast response time 20ms on rise and 30ms on fall.

Infrared optical travel limiter for 3D printers and CNC, ensures precise detection of travel ends for XY Z axes. Uses TCST2103 sensor for fast and stable switching, has 3 pins for simple connection, includes 800 mm cable with connector, compatible with Arduino and other development boards.

Ideal for detecting the presence of a laser beam in Arduino projects or other development boards, this receiver offers stable digital response for automation and safety systems. It operates at 5VDC, delivers a HIGH signal upon detection and LOW in the absence of the laser, has maximum efficiency and compact dimensions of 16 x 19 mm for easy integration.