Makerfire DC 12V Photoelectric Switch Sensor Relay Module with Cable DIY Wiki Product Name : Photoelectric Switch Sensor Relay Module;Mode : Light Actuation Mode;Working Voltage : DC 12V Relay Loading Voltage : AC 250V 10A,DC30 V 10A;PCB Board Size : 50 x 25mm/ 2" x 0.98" (L*W) Sesor Size : 60 x 20.5mm/ 2.4" x 0.8" (L*W);Cable Size : 50cm/ 20" Mounting Hole Size : 3mm/ 0.12";Material : Electronic Components, Plastic Net Weight : 17g;Package Content : 1 x Photoelectric Switch Sensor Relay Module