Time delay relays are simply control relays with a time delay built in.
Their purpose is to control an event based on time.
The difference between relays and time delay relays is when the output contacts open and close:
on a control relay, it happens when voltage is applied and removed from the coil; on time delay relays,
the contacts will open or close before or after a pre-selected, timed interval.
TDR-1002-8S's delay time is 8-9 seconds and its working voltage is 8V-32V.
Specification:
Housing Construction: plastic
Normal Voltage: 8v
Operating Voltage: 8v-32v
Test Voltage Up: 8v
Test Temperature: 20°C ± 2°C
Max Power: 15A
Operating Temperature:-20°C ~ 85°C
Symbols Functions:
86: Battery(+)
85: Battery(-)
87: Load to Ground
30: Battery(+)