Bistable relay for flush-mounted installation BIS-402

Bistable relay for smart lighting control

The BIS-402 bistable relay is a practical solution for controlling lighting or other electrical devices from multiple points. It is ideal for long corridors, stairs or large rooms, where it is convenient to turn the light on and off from different places. The device is designed for flush-mounting in a standard 60 mm diameter box, which simplifies installation and ensures an aesthetic appearance.

How does a bistable relay work?

The receiver is switched on after a short current pulse, generated by pressing any momentary (bell) button connected to the relay. Pressing any button again will turn off the receiver. The relay does not have a contact position memory, which means that after a power failure and its return, the contact automatically switches to the off position – this is an additional protection against uncontrolled switching on of devices.

For installers:

BIS-402 is a solid solution that allows flexible lighting control without the need for traditional stair switches. Installation is simple and intuitive, and the compact size of the device makes it easy to place in a flush-mounted box. However, it should be remembered that the relay is not compatible with illuminated switches.

For end users:

Thanks to the BIS-402 relay, you can create a convenient lighting control system in your home. You can mount buttons in strategic locations – at the entrance to the room, by the bed or on the staircase – and control the light from any point. This is an ideal solution for people who value comfort and functionality.

Key product features:

• Versatility: Ability to control lighting from multiple points using momentary buttons connected in parallel.
• Safety: Automatic shutdown after power failure prevents accidental switching on of devices.
• Easy installation: Designed for mounting in a standard flush-mounted box with a diameter of 60 mm.
• High reliability: Solid construction ensures long-lasting and trouble-free operation.
• Wide power supply voltage range: 165÷265 V AC, nominally 230 V AC.
• Maximum AC-1 load current: 10 A (up to 1500 W for bulbs).
• Contact configuration: 1 × NO/NC (normally open/normally closed).

Please remember that the maximum load current is an approximate value and may be limited by the specifics of the electrical installation. If in doubt, consult a qualified electrician.