PSDB1005NT820 is a Viking electronic timer relay module. It is designed to control switches, motors, pumps, and other types of loads. This module has three separate time functions, which include adjustable On/Off delay, phase angle delay, and fixed time delay. It has an adjustable time range of 0.05 seconds to 16 hours and has a voltage rating of 120 to 300 Vac/Vdc. The PSDB1005NT820 has a maximum switching capacity of 10A resistive and 2A inductive. It is UL and CSA approved and is suitable for use in a wide range of industrial, commercial, and residential applications.