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.