Time relays are widely used in hobby electronics for controlling models, processes, and creating various timing effects. This kit includes four different time relay circuits assembled on a single experimental PCB.
The included circuits allow delay times of up to approximately 30 seconds. The difference between the four variants lies in the accuracy and timing method used.
In all four circuits, an LED is used as an indicator element. It can be replaced with another indicator or an actuator with the same or lower operating voltage and current, such as an electromagnetic relay, lamp, micro motor, and similar devices.
All four circuit variants are assembled on the supplied experimental printed circuit board. Power can be supplied by a stabilized power source or a battery.

Technical Specifications:
Type: time relay.
Number of circuits: 4 variants.
Maximum delay time: up to 30 s.
Indicator: LED.
External load support: yes.
Supply voltage: 9 V DC (12 V DC possible).
PCB dimensions: 65 x 42 mm.

This product is a DIY assembly kit.