RFID Proximity Entry Door Lock Access Control System + 10 Key Fobs

nice good quality esy to uses

Item received on January 26, 2018. Item Quality is very high and good product.

Used this in place of an elevator call button that operates on 120v. If you look at the relay on the back, it is a standard PCB mount relay and is rated at 120-240vac @ 3 amps... Again, this is a typical pcb mount you'd find in all sorts of electronics. Instructions are horrible but if you have some intuition, you know what you're doing and have electrical/electronic troubleshooting skills you should be able to make it work. Not sure what all the gripe is about the built in relay on the thing. I measured the current on the elevator setup and saw about 625 mA, the relay can handle at least 4 times that. Measure the current through the load you are driving to determine if you need a larger relay to be driven by the onboard relay and try to stay decently well below its limit. If you do need a relay, I would suggest a solid state relay. It can be tampered with and somebody with some know how could defeat it, however, it does have a spring loaded tamper switch that could be utilized to trigger an existing alarm system or siren. No problems programming it, a little tinkering with the meter (hint: continuity) and it works nicely so far. On some of the connection points I found 12vdc, I'm assuming some of the other reviewers are using this 12vdc to drive their load and not just the powering the common on the PCB relay directly. I suspect this COULD be the issue some people are having with it malfunctioning over time and I would not suggest using it like this as its possible that the current draw of the load is being yanked through the units supply line causing premature failure, just a thought. Again, the author of the instructions for this thing could definitely use more than a little guidance in their utilization of the english language ;) Overall, I think it's pretty nice for the price. I removed one star because if power is lost, the relay is triggered upon restoration of power (like an outage) and allows access momentarily if someone is there at that particular time I haven't found a way to prevent it, again, more investigation needed. In this application it shouldn't be that big of a deal. Last thing, I have not seen any video or anyone using this unit quite like I am (120vac on the PCB relay). I did not follow the instructions much because they are useless. I looked at the relay and seen its rating, and then used my multimeter to probe for 12 volts while it was powered on and enabling the relay. Used continuity test to see which pins are connected through relay and verified 12vdc was not present on those connection points while relay was in both states before connecting 120v to it.

This is my second and both devises operate slightly different than described in the supplied manual, but with some research on the web I was able to figure it out.

Product as advertised. As stated in other ratings the instructions were a little difficult to understand. Just use the "add more tags" section farther down and it will works fine.