5V NE555 Delay Switch Relay Module
Function features
1.On-board NE555 chips
2.On-board adjustable resistance, adjustable delay time (0 ~ 10 seconds)
3.On-board status indicators
4.Module has continued flow protection relay
5.Module is normally open (NO), normally closed (NC) output
6.Working voltage: 5V
7.PCB size: 60.2 (mm) x16.8 (mm)