Review on ⏱ Powerful Small Miniature Timer: On-Off Cycling Delay Relay 0.1 sec to 9999 hours. 3V 12V 18V DC 5A. Perfect for Industrial Control and Hobby Projects by Gerard Hudson

This device can do much more than a traditional time delay relay. As a plant electrician, who is familiar and experienced with the complex control of machines, it was not easy to understand the programming of this multifunction device. A YouTube video and manual will help, but remember that both are presented by someone who is intimately familiar with the device and skip if you understand the details. I believe programming requires an LED lamp as well as a set of switches (both can be single pole). It should be noted that if the green and white wires are grounded and then released, the device will proceed to the next programming sequence (watch the video carefully). Pay attention to the trigger configuration numbers. The two devices can be used together. I programmed the first device to function number 17 with a positive signal to trigger the device. The output of the first device (yellow wire) was then used to supply the input voltage over the red wire to the second device which was set to function number 3. I'll rate the device a 5 and the instructions a 3 for a total of 4.