1 s to 999 h Short/Long On-Off Interval Repeat Cycle Timer Plug Outlet with Countdown and Light Sensor, Waterproof for Outdoor (15A 1HP)

Works great. It was easy to program and confirm settings. Seems durable and high quality. It's been reliably switching off/on a grow light that is connected to another separate standard weekly timer. I have this Techbee repeat interval cycle timer set to remain on all day and quickly switch off/on for just two seconds shortly after my existing weekly timer switches on a plant grow light each day. That grow light has three different color modes designed to affect growth. My plant light modes can only be changed by depressing a foot switch on/off/on/off/on/off in sequence. I'm using this cycle timer to simulate a manual off/on toggle foot switch that switches through the plant light's three color modes. I now have my plant light automatically switch on, and once on, this repeat timer will automatically switch it off/on for two seconds so it advances to the next light mode in the off/on toggle sequence. With a short off/on 2 second setting, I can now manage my plant light automatically. It's very flexible and has precise programmable timing. I also like that it's water resistant as it sits right below my plant.

Works great Easy to program

Overall, this is a useful little gadget- in my use case, I’m using it to cycle a small water pump for my hydroponics. You can set any increment of time (1 second to 999 hours) On and off (can be different lengths of time). For the price point, quality is as expected and it’s stood up to some harsh conditions over the years, I can’t tell the one I bought last month apart from the one I bought 2 years ago. The only con with these units is that randomly, if the unit loses power (say, if you have it on a switch controlled circuit), it will sometimes reset and loose its programming when the power is restored, but it generally has good power-loss-memory.

I really like this product. In most cases after power failure it starts right up and begins its timing cycle. However, I was using it to turn a pump on and off and when power is lost during pumping it could reset into programming mode. As long as the pump was off when power was lost, it seems to be ok. Also, the module turning the pump on and off was ok as well. It occasionally resets only when power is lost and the pump is pumping. Perhaps a surge protector on the motor would help this but hasn’t been tested.

Easy to get set and perfect if you need a short or specific run timer. I use it to run an exhaust fan for a mushroom fruiting chamber. It really helped me dial in the fresh air exchange that I needed. I'll definitely buy more when I expand.

Bought this to use with my hydroponics garden tower. Works great for interval watering. A little difficult to initially program using the instructions but eventually figured it out. Timed watering is a great feature on this product at an excellent price. The programming stays if you unplug it.

This was easy to program. It has a very wide range of on times & off times. I can hear a click when the red on-light illuminates, so I assume that it has a relay inside. It holds the last set of programmed times when power is removed for half an hour. I didn't test it for longer. I didn't test the light/dark function. The housing seems sturdy. The price was right. I do not yet know about long term durability as I have just started to use it today. It seems like a great little unit.

1) Received this product shipment very quickly, however this product does not carry UL approval for the USA. It only carries CE "self certification" for some European countries: - the CE certification of this product does not comply and is not applicable with the U.S. National Electric Code, - this manufacturer does not list the USA UL certification mark in the technical data sheet supplied with the product, nor is a U.S. UL certification sticker or UL mark applied to this device. 2) The technical data sheet received states that *** this device does not have any internal memory for the program you enter in the timer. *** Therefore, I had to start from scratch and reprogram it again when I unplugged the device! I cannot take the fire or safety risk of not having UL approval on this device. Also, I do not have the time to reprogram this unit every time it may be unplugged or otherwise loses power. Therefore, I will be returning these two devices

This timer is amazing with endless applications. Seller is great at answering questions. Extremely happy with my purchases was looking for ages for something with this functionality.

Works super good. I bought two of these and keep one as a backup. It controls my heat trace on an underground line going to the well at my lake house. Even though the heat trace is self regulating, it can turn on unnecessarily so I use this to ensure the water isn’t too warm. I have it set for 10 min on, 10 min off. Thats a 50% duty cycle.

I love this timer. I have it set up so it turns on a small water pump connected to a very limited capacity water well for one minute out of every hour. It has been really reliable.

Works great for my Apartment Patio Sprinkler... I have it timed for between 25-30 seconds on, each day on a 24 hour cycle when away from home... Keeps my plants watered when gone for 2 weeks...

Very good product