Wired Expansion Push Button ORNO DB-2PD for SONUS AC Door Chime — Battery-free

ORNO DB-2PD is a wired expansion push button created to extend the SONUS AC door chime system without the need for batteries. The unit connects directly to existing chime wiring and acts as an additional call point, providing a reliable mechanical switch for visitor notification in homes, offices or multi-entrance buildings. Its battery-free operation and straightforward wiring make it suitable for installations where a simple, maintenance-free doorbell button is required.

Advantages

The wired design eliminates the need for battery replacement and ensures uninterrupted operation as long as the chime circuit is powered. Compatibility with the SONUS AC chime system allows for seamless integration with existing setups. The compact form factor and conventional push-button operation provide a familiar user experience and simplify installation and maintenance.

Suitable for

• Private homes wanting an extra external or internal doorbell button
• Offices and small businesses that require additional call points
• Apartment blocks or multi-entrance buildings that need wired expansion of a central chime system

Key specifications

• Wired connection to existing door chime circuit
• Battery-free operation
• Push-button mechanical switch
• Compact, surface-mounted design suitable for standard doorframe installation
• Designed for indoor and sheltered outdoor mounting where wiring access is available

How to use

Turn off power to the chime circuit before installation. Mount the push button at the desired location near the entrance and connect the two conductors to the existing chime wiring following the manufacturer’s wiring diagram for the SONUS AC system. Restore power and test the button to confirm the chime operates when pressed. If necessary, secure the button housing and ensure connections are insulated and protected from moisture.

Usage recommendations

For reliable long-term operation, install the unit where it is protected from direct exposure to rain and extreme temperatures. Use appropriate gauge cable and secure wiring runs to prevent mechanical strain. If you are unsure about the wiring or local electrical regulations, consult a qualified electrician before installation.