Wireless Doorbell Signal Transmission from Garage to Flat

Question

Good morning. I would like to install a letterbox in a fence post along with an illuminated bell button. The instructions say to supply the illuminated button with 24V. I have a 3x2x0.5mm cable connected to the post (I assume 2 wires will supply voltage to the backlight LED and 2 wires will...

dufek · Accepted Answer

Added after 3 [minutes]: . There is no rule, a cheaper one may also be sufficient. Better to install the transmitter in the garage, always a little better working conditions (less temperature and humidity changes).

dufek · Accepted Answer

There is no need to buy a separate power supply, the power consumption will be so low that the one from the machine will suffice.

dufek · Answer

The simplest way is to use a wireless bell. Connect the coil of the relay to the wires in the garage pulled from the button on the box, and connect the contacts to the wireless bell button.

Rysiek2 · Answer

You can implement this by using a radio link between the house and the garage.
A receiver in the house and a transmitter in the garage, where the entrance is short-circuited with wires from the gate.
ZAMEL makes something like the RNP-1 transmitter and the receiver probably the ROP-1

The effect will be the same as if you led a wire from the gate to the house

grabsoon · Answer

What if the 24v power fed into the slop could be used to power the bell transmitter hidden inside? As far as I can see, 90% of wireless bell transmitters run on 3xAAA (4.5v) batteries and here I could use the 24v sent to the backlight, select a suitable resistor and achieve 4.5v for the factory transmitter which would mimic a 3xAAA battery. . Problems I see: - whether such transmitters are easily disassembled at all or whether half of them will be destroyed if you try to tamper with the casing - whether there is a chance that such a transmitter will work for years without failure and even after sealing the roof of the pole (no access to the inside) I am not shooting myself in the knee As I wrote, I am a layman in these matters so I can write silly things. But as they say if something is stupid but works .... it is not stupid

dufek · Answer

Obtain the voltage using a suitable stabiliser. Bell transmitters are seamlessly disassembled. One works for years and the other doesn't - it's Chinese and you never know.

grabsoon · Answer

. Thanks for the tip. As a layman I have no idea about such solutions. Would you suggest any link to a proven product? Agreed - but I count on the fact that in most cases these are outdoor and relatively uncomplicated products. Arguably the quality is most influenced by price so maybe if you buy a bell for > 100 PLN it has a chance to last a while.

grabsoon · Answer

In your opinion, would the powering of the relay and the LED on the button on the letterbox with one power source, such as an automatic garage door operator Mido 600

.

is this a good idea? But is it better to buy a dedicated power supply for this?

grabsoon · Answer

Another academic question. I'm afraid that during the work I'll accidentally short-circuit and break something in the gate operator. Is there any possibility of installing something which will protect me from such a scenario? The manual says that the 24 volts is connected to the photocells. Do you think the operator already has some kind of protection against an accidental short circuit?

dufek · Answer

It should be protected but it is better to fit an additional fuse.

grabsoon · Answer

Am I right in thinking that in order to select such a fuse I need to know what fuse is built into the machine anyway and use a cut-out fuse at a current lower than the built-in one? Otherwise I will blow the fuse in the automat and not the external one?

bhtom · Answer

Welcome, The power supply should absolutely be switched off during the installation work. Regards.

grabsoon · Answer

And do you perhaps know if there are any such small connectors on sale. The one pictured is 2.8mm wide and is too big for the male connectors sticking out of the bell button. .

dufek · Answer

. They do exist.

grabsoon · Answer

Kingdom for the link.

Wireless Doorbell Signal Transmission from Garage to Flat

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