The Song Chuan 8511CS0-9D is a general purpose, single-pole, normally open (NO) relay. It is a SPDT (Single Pole Double Throw) type relay with both a normally open and normally closed contact. It has a 5A 125/250VAC rating, and a maximum switching power of 745VA / 385W. Features include a brass or silver contact material, an electromagnetic coil, and an operating voltage of 5VDC. This relay is UL, CSA, and VDE certified, proving its quality and safety.