Doorbell transformer Philips DES1000DPS/29 — 24 V output, 100–240 V input, plastic housing (60×55×90 mm)

Philips DES1000DPS/29 is a doorbell transformer designed to convert 100–240 V AC mains (50/60 Hz) to a 24 V low-voltage output suitable for door chimes, intercoms and access control devices. The compact unit is housed in a white plastic enclosure with dimensions of 60 × 55 × 90 mm, providing a neat and discreet mounting option where a reliable 24 V supply is required.

Advantages

This transformer provides a stable 24 V output from a wide input voltage range, making it suitable for regions with varied mains voltages. The plastic housing is lightweight and resistant to corrosion, and the compact dimensions simplify installation in confined spaces. The device is intended specifically for low-voltage signalling equipment, ensuring compatibility with many door chimes and access control components that require 24 V power.

Suitable for

• Powering 24 V door chimes and mechanical or electronic bell units
• Supplying intercom or audio entry systems that require 24 V
• Providing low-voltage supply for small access control modules or release mechanisms

Key specifications

• Input voltage: 100–240 V AC, 50/60 Hz
• Output voltage: 24 V (suitable for low-voltage signalling devices)
• Housing material: white plastic
• Dimensions: 60 × 55 × 90 mm

How to use

Mount the transformer according to local electrical regulations and the installation instructions supplied with the doorbell or access device. Connect the primary side to the mains supply (100–240 V AC) with appropriate wiring and protective devices, then connect the 24 V secondary output to the doorbell, intercom or access control input. Ensure power is switched off when making connections and verify correct polarity and secure terminals before restoring power.

Usage recommendations

Install in a dry, ventilated location away from direct moisture and excessive heat. Use suitable circuit protection on the mains side and confirm that the connected device’s 24 V rating matches the transformer output. For fixed installations, comply with local wiring codes and consider professional installation if unsure about electrical work.