NOYITO 4-Channel Programmable Time Relay Controller 99-Step Multi-Channel Timing Trigger Solenoid Valve Linkage Control LCD Display Optocoupler Isolation

Seems to be quality haven't had time to program it yet. Good solder joints

The instructions are horrible. I understand that they are translated from Chinese, but they could pay someone to write a proper set of instructions. Having an extensive amount of experience programing timing relays, I was able to get this to work for what I wanted it to do. After many, many hours of programming and wiring the relays properly I was finally ready for the final install. The first problem was that it was glitchy. It would work 6 or 7 times perfectly, then it would randomly jump to a different step without having changed any programming or wiring.The final straw came while performing the last function test, the PTR4 Controller just stopped working. The timer would simply not start. I tried to reprogram, change all the settings and even tried to run it in auto (timing starts upon power up), nothing worked. It is essentially bricked. Back to Amazon it goes.I considered exchanging it, but the truth is, I need something reliable for the function I was hoping to utilize this for. It is clearly not reliable.

Somewhat difficult to program. Instructions are vague.

Very nice little relay timer. I wanted to sequence 4 external high current relays to duty cycle a generator output to multiple heavy appliances. This made that easy. I could have used 4 individual plug-in timers but wanted a common timer to avoid two appliances on at the same time (because manual timers drift) which would overload generator. A single timer does this in its sleep.So I have 8 states: A on 30 min, 2s delay, B on 30 min, 2s delay, C on 30 min, 2s delay, D on 30 min, 2s delay, repeat. Start & Stop momentary buttons.Could have used an Arduino with Relay shield but this is easier. Instructions are clear - just read thru completely once as some features like infinite loops require long button pushes.Now I can use my single modest power generator to power several neighbors’ refrigerators without fear of overload. Less gas, less noise, less cost.

exactly what I needed