D3V-166-1C5 is an Omron electro-mechanical relay, widely used in industrial automation applications, in particular for controlling lights, motors, pumps and fans. This single-pole double-throw (SPDT) relay is a general-purpose 5 A device, which has a switching voltage of 24 V DC and a switching current of 5 A. It also features a contact form of 1C, an operating voltage of 12 V DC, a contact resistance of 200mO max and a coil resistance of 120O. It has a dustproof, oil-resistant and corrosion-resistant construction, for a longer service life. A built-in diode is also present. It has a metal case, a black base and gold-plated silver alloy contacts.