DIY wireless wall switch?

Question

Smart House

Task: apply voltage to, for example, a light bulb on the ceiling, but do not pull the wire to the switch on the wall.
Most likely it will be like a switch with a battery on the wall and a block key that closes and opens the circuit in front of the light bulb and which receives signals from the switch on the wall.
There is on aliexpress for 400 rubles, but I don’t want with a keychain.
ru.aliexpress.com/w/wholesale-wireless-wall-switch.html
There is a normal wall button, but they cost from 2000 rubles.
Question: is it possible to assemble something like this yourself, so that it does not cost more than 2000 rubles?

Answer 1

You can assemble the simplest radio transmitter, receiver, trigger and meet up to 2t.r. but then false positives from interference are possible. And other benefits of saving

Answer 2

Look towards Glanzen http://blog.rfonoff.net/2015/04/10/glazen-cottage-answer/ they are quite cheap. They work well, they say the board is neat. A set of a switch and a block will cost 1000 rubles.

Answer 3

I would not recommend wireless switches at 433 MHz at all. In many cases, they will work through time. It is necessary to choose from what works at a frequency of 868 MHz: HiTE PRO, Zamel, Delumo. They even break through several reinforced concrete walls.
Delumeau is really tough Chinese, there is a marriage, but in general it works. Sensor for an amateur.
Zamel and Hite Pro are really high-quality gizmos both in terms of characteristics and elemental base.
The price tag for all these switches is high, due to the fact that they are small, run on a small battery and should consume a minimum of energy. Components for them are many times more expensive than for the remote control. I think that in the near future, as radio switches gain popularity, they will become cheaper. If the dollar also drops to 50 rubles, then in 1-2 years the price may actually drop to 1500 per set.

Answer 4

The installer complains that the openssl extension is not enabled. Check if the line extension=php_openssl.dllin php.ini is commented out .