Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

It normally takes two transistors to build a blinker circuit (in order to make positive feedback possible). However, you can also use a photo-resistor (LDR) that is illuminated by an LED. The feedback ...

MANITOWOC, Wis.--(BUSINESS WIRE)--Orion Energy Systems (NYSE MKT: OESX) is ringing in the New Year with the launch of the industry’s first complete suite of LED Door Retrofit (LDR) products. The LDR ...

Harris LDR LED Troffer Retrofit lighting fixture kits, in addition to various energy control systems, accelerate energy savings via occupancy based activation of the lighting systems, automatic ...