CENTROPOWER 16.5V 40VA Plug-in Transformer with Auto-Reset PTC Fuse | Ring/Nest/Sensi Compatible

CENTROPOWER 16.5V 40VA Plug-in Transformer

Meet the CENTROPOWER 16.5V 40VA plug-in transformer, designed to replace underpowered power supplies for doorbells, chimes, and select security systems. This UL-compliant unit delivers a steady supply with a safety-first design, helping keep alerts and notifications reliable.

Upgrade with confidence

Key design points from the data include a 16.5V output, a 40VA rating, screw terminals for straightforward wiring, and an auto-resetting PTC fuse. An LED green power indicator confirms the unit is receiving power at a glance.

• Steady output power that supports doorbells and burglar alarm components
• Easy replacement using common wiring with screw terminals
• Auto-resetting PTC fuse for safe, maintenance-free operation
• LED indicator to quickly verify power is on
• No-load voltage typically around 18.5–19.5V, testable with a standard meter
• Broad compatibility with popular devices such as Video Doorbell Pro, Nest, Ring, and Sensi

Real-world use cases

Whether upgrading an aging transformer or installing alongside a new smart home setup, this CENTROPOWER transformer provides consistent voltage to keep chimes and security devices active. The plug-in form factor makes it convenient for wall outlets and power strips, while the screw-terminal design supports tidy, secure wiring.

• Doorbell chimes remain responsive during busy times or in larger homes
• Video doorbells receive stable power for reliable video and alerts
• Security panels and sensors benefit from a dedicated 16.5V supply
• Smart thermostats or related devices that require constant voltage can also benefit

Compatibility notes: the listed brands in the data show representative compatibility rather than exclusive support. If your device requires a specific power specification, verify its voltage and current needs before pairing with this transformer.