Wall switch development
1, the early switch, commonly known as: pull wire (rope) switch, pull light switch (Laden switch); it is easy to pull the rope off.
2, toggle switch: cancel the rope, pull the wire directly to the bed or wall, reach out to close the lamp, in fact, this installation method is extremely unsafe. Not scientific.
3. After that, the above two switches are directly changed to the current 86-type switch, but its switching mode is also extremely inconvenient, and the keys are small (commonly known as nail keys). It's easy to be bad, and sparks when switching lights.
4, in order to avoid not seeing sparks when switching lights, simply change the small button (commonly known as the nail button) into the current seesaw switch on the market, do not know how to cover the ear?
5. The highest technical content is now the remote control switch, intelligent wall switch, wiring-free switch, touch switch. Intelligent delay switch, remote control switch, hotel free wiring switch, villa free wiring switch. It has a service life of up to 1 million times and also protects the life of the luminaire.
6. Now has developed a touch switch for pure glass panels. User-friendly night light function.
Milk Flow Meter Turbine,Flange Air Flowmeter Gas Turbine Meter,Digital Turbine Type Turbine Flowmeter
Sanitary Ware.Co., Ltd , http://www.nbthermocouple.com