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Function
Auto mode: Common power supply must be City Grid Power. Backup power must be AC genarator. When there is only one power supply is working, the product will automatically switch to that power supply. When the common power supply and the backup power supply are supplied at the same time, the common power supply is used Preferentially.
(Attention: in automatic mode, forcibly rotating the power switch handle will cause damage to the transfer switch)
Manual mode: Power supply should be transfered manually by rotating the handle.
Josh T
2025-08-22 16:24:45
I have had this installed for a few months now, luckily never had to switch the generator power, but I like it, and the initial set up worked as expected. There are no directions to speak of, so I don't have the automatic feature functional. I just plan to manually switch it after I have started the generator.
rich0452
2025-08-07 18:08:11
I ordered the cheaper version of this and had to replace it. Everyone complains about the instructions in the cheaper model for a reason - they aren't correct. While these instructions aren't the best, they are light years beyond the cheaper model. Save yourself a lot of frustration and spend the couple extra bucks to get a product that works. For me, this was the one that worked. Pay careful attention to the voltage/wattage ratings and make sure you order the correct model. Also note the transfer times are very respectable with this product. The cheaper version is slower, so if you have electronics connected when it switches over, you'll have to re-boot. With this product I don't lose anything on transfer. A definite plus!
NG
2025-07-23 14:49:50
I bought it, to use it with a 10000 watt generator that works 120/220 volts, in a beach house where we have many power outages, so far it has worked very well in making the transfer. It looks or feels very good quality materials.  I have been very comfortable since I should not be going to each power drop to be moving manual switches.  Today, having a fall, I only turn on the generator with remote control and the ATS makes the change. When the energy arrives in the city, it only turns off the generator by remote control. It is quick to make the change.
Scott H.
2025-07-18 14:50:12
I installed the switch as the wiring diagram suggested, but I didn't notice the tiny print on the unit that reads "Control Voltage: AC220V". I supplied 110V power from my battery system and the unit buzzed loudly, gave a puff of white smoke, and died in less than 5 seconds. I could manually flip the switch to my other power supply (with the control contacts disconnected) and at least get power to flow back into my panel, but from then on I couldn't even manually switch back to the other source.So, if you're not running 220V through the relay contacts, beware that this thing will destroy itself in a second.
Sahr Simeon Fayiah
2025-07-02 17:42:19
It works perfectly well with my nationalpower grid and generator. The switch over is very fast with nothing going off. A very good device
Ramdy Guerrero
2025-06-26 13:27:02
Funciona perfectamente, solo lo estoy usando a 40 amperes, el control A hay que alimentarlo a 220 Voltios, el Control B puede ser a 110 o 220, asi funciona muy bien, hace el transfer efectivo, ahora me toca que mande a prender el generador de emergencia.
Anthony C. D.
2025-05-10 19:17:38
The media could not be loaded.
sparky joe
2025-04-07 12:13:00
Easy to use. Must have crimp on lugs .100 amp normal power, 63 amp secondary source.
m j street
2025-02-05 12:16:23
Good piece of kit for the price
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