The new sensor SNZB-04P just arrived.
What I have found is this (compared to the previous sensor SNZB-04):
- The housing of the sensor is very tight. I couldn't open it without destroying some of the snap jonts -- but the housing can easily be fixed to reuse it.
- The battery of the sensor is much bigger (CR2477 with diameter x height: 24 x 7.7 mm) compared to the previous sensor (CR2032 with diameter x height: 20 x 3.2 mm).
- The dimension of the sensors PCB is much bigger (length x width x height: 42.2 x 27.2 x 11.5 mm) compared to the previous sensor (length x width x height: 41.4 x 20.7 x 7.5).
- The new sensor is using an SMD hall sensor to detect the magnet, the old one used a simple Reed contact, which can be reused like described in the design.
- The new sensor has a temper switch which would be very interesting to be used as a second contact oi destinguish the three positions of the window handle. I had a look at the MQTT logs of Zigbee2MQTT. The tamper switch doesn't really work independent as its state always returns to false when the contact triggers -- even if the temper switch is open.
The current approach of the 3D design can not be used because there is no reed contact to unsolder to place it near the rotary pin magnet. Unsoldering the SMD hall sensor is not really an option. So, the 3D design of the model would have to be changed so that the PCB of the sensor has to be move beside the handle (instead to the lower/upper part), so that the hall sensor sees the rotary pin magnet. But this would make the 3D model to wide for the window frame.
Togther with the unexpected behaviour of the tamper switch, I come to the conclusion, that I will not support the new SNZB-04P sensor for the Window Rotary Handle Adapter.
Customizable Window Rotary Handle Adapter for ZigBee Sensors
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@gromeck_1734052 thank you for taking the time to test the new sensor. Mine should arrive tomorrow, but I'll find usage for it anyway.
I have Shelly BLU Door/Window ( https://www.shelly.com/products/shelly-blu-door-window-white) and I was wondering about using it. It is using Bluetooth, I have 4 of those mounted in my house and all of them work perfectly.
the PCB is a bit bigger, so it would probably make the adapter bigger. The magnetic sensor is soldered as in old Sonoff, so we should be good.
I can send pictures of the PCB with measurements if you are interested.
@Misiu_235636 let's switch to a private chat ...
Hi @Misiu_235636 , so far I have no snzb-04p, and therefore I can't tell if it would work.
But I checked the differences and I assume that it will _not_ work.
But the tamper is very interesting, as it might be used as a second contact to implement a three state rotary sensor to distinguish between closed, open and tilted with one sensor.
I have ordered two of these new sensors and will come back on it.
@gromeck_1734052 thank you for the reply. I have Shelly BLU door and windows sensor, but sadly it is much wider, so it won't fit. I'm going to order the new Sonoff sensor as well.
Does it work with snzb-04p or only with snzb-04? Sonoff has two sensors right now in the offer. Thank you for the reply