Cyclic Timer Using 555 Timer IC 1H-4Hz

Cyclic Timer kit can be used in all applications requiring a cyclic On/Off condition of the relay.  This kit is ideal for use in flashing of a light bulb, buzzer or siren application.

Input – 12 VDC
Relay output – SPDT relay
Relay specification – 5 A @ 250 VAC
Relay state LED indicator
Preset adjustable range function
Power-On LED indicator
Power Battery Terminal (PBT) for easy relay output connection
Four mounting holes of 3.2 mm each
PCB dimensions 44 mm x 58 mm