7PV1518-1AW30 is a timer module manufactured by Siemens for use in industrial automation systems. It is a dual-in-out, single-pole double-throw (SPDT) switch with a timing range of 0.05 seconds to 100 hours. It has a 250 volt alternating current rating at up to 3 amps, and is compatible with both 12 to 240 volt alternating current and 12 to 240 volt direct current power sources. The timer has a standard DIN rail mounting and comes in a single module size. This part is ideal for applications requiring accurate and repeatable timing.