Descripción
Blu-ray (Otis usa 3 cables)
Blu-ray (otras marcas usan 4 cables)
Luz blanca (3 líneas para Otis)
Luz blanca (otras marcas usan 4 cables)
Luz roja (Otis usa 3 cables)
Luz roja (otras marcas usan 4 cables)
A311 luz roja
The button is divided into blue light, white light, and red light, but the color of the light is different. For Otis, please buy 3-wire (Otis has no red light), other elevator brands please buy 4-wire, 3-wire and 4-wire cannot be used in common. 3-wire and 4-wire refer to internal wiring, not visible from the outside. There are 4 pins.
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