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

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.

I needed a timer that could be programmed to cycle off a battery charger for a few seconds so that it would restart once every three days to keep a 200Ah LiFePO4 battery charged.I set up this 200Ah battery to power a 2500 Watt Sine Wave inverter to use as robust UPS system for all of the power sensitive computers and other electronic devices in my house.The problem I discovered was that the inverter's LCD display would eventually draw down the battery after 5 or 6 days to the point that the inverter would sense the voltage falling below 11.8Vdc and shut the unit off.If I didn't notice that, the unit would not be ready for a power outage and defeat the entire purpose.The Battery's BMS (Battery Monitoring System) circuit that is built in to the battery, keeps the charger turned off until it reaches somewhere below 11.8Vdc. So the charger never turns on by itself unless you cycle the power.I programmed this timer to run in the on state for 36 hours and then off for 5 seconds which will now restart the charger and brig the battery back up to 14.4Vdc where it is fully charged.When fully charged, the BMS circuit tells the charger to turn off, which it does.Works like a dream. No more caught off guard with a low or dead battery from the system sitting idle.The instructions were a little confusing, but just play with the buttons a little and it soon becomes easy to understand how it programs with no problem.One down side to warn you about which is not an issue for my application; It's advertised to have memory backup, which it does in that if you unplug it, it remembers your programming scenario.However, after power is restored, it starts the originally programmed time cycle all over again instead of continuing from the point of elapsed time before the power failure.In my application, it is beneficial that upon any power failure, I will want my charger to cycle and bring the battery back up immediately.Prior to finding and using this product, I would have gone to the trouble and expense to use two 12Vdc timer boards, one for the 36 hour time delay and the other for the 5 second cycle off combined with 120Vac plugs and receptacles to perform this task instead of this all in one self contained, safe and waterproof plug and play unit.The unit seems very well built and waterproof for outside use. I highly recommend this product!Hope this helps.

Great value and very easy to set up, it literally took less than a minute to schedule the power on/off cycle i needed.

Works great

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 have this hooked up to 2 small free air exchange fans in my mushroom tent to run 5 minutes every 30minutes. It works perfectly, reliably, and the setup was very easy. Settings were saved during short power outages. Would buy again.

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

It works great. I wish you could add more hours to time off when you’re using the electric eye had to turn it on and off either day or night.

Just received this product a couple days ago. Setup took two minutes and it works as described on Amazon. The product seems very well made and robust. It is used to turn a water valve on and off at set intervals to water plants in my greenhouse. If this unit fails my plants will die, so hopefully it is as reliable as people say in these reviews.

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 great for my hydroponic tower and has been great rain or shine

I got this for my little pond pump. So, now the fountain will come on in the mornings and go off every night...perfect! So easy to set up. I love it

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.