Metzler MT4.0 wireless signal repeater doorbell extender, up to 150m range, for retrofitting

Radio Signal Repeater Radio Converter Doorbell Extension for Conventional Doorbell Systems

Already have a door gong and want to extend your existing doorbell system wirelessly? Use our extension set, which forwards the doorbell signal wirelessly by radio to a receiver up to 150m away (open field) — a plug-in receiver or a portable, battery-powered wireless gong.

• Simply & quickly integrated into any existing doorbell system
• Metzler MT4.0 radio transmitter for electronic, electromechanical and mechanical doorbells / gongs.
• Open-field range of up to 150m depending on model
• Connect as many wireless gongs (plug-in or mobile battery-powered receivers) as you like
• Quality product from Malmvik — your specialist for custom doorbells

The new Metzler MT4.0 radio transmitter fits universally with all electronic and mechanical gongs²

Whether you have an electronic gong (with selectable melody), a bell mechanism, or a mechanical gong with chime bars — the Metzler MT4.0 radio transmitter is the ideal wireless gong transmitter for extending your existing doorbell, so you never miss a visitor again, even while you're on the balcony, the terrace, or in the garden.

Thanks to the wide range of matching receivers, you can also opt for a battery-powered, mobile receiver that you can always take with you and that, thanks to its visual and audible signal, is the ideal companion.

You don't need a tradesperson — installation takes just a few minutes, even for inexperienced DIYers. Using the included adhesive pad, you can attach the radio transmitter directly next to or inside your existing gong. Besides forwarding the signal to the receivers, the blue LED on the radio transmitter also provides a visual signal whenever a guest rings the doorbell.

Small dimensions - big impact

Thanks to the extremely compact dimensions of the radio transmitter — just 65mm*30.5mm*15mm — it fits into many existing gongs. Thanks to the included adhesive pad, mounting couldn't be easier. For installation, simply connect the 2 cables on the transmitter to the existing gong.

Enjoy wireless freedom with our radio signal repeaters for all kinds of existing, wired gongs².

In no time you can extend your existing doorbell with as many wireless receivers as you like. This way you can hear visitors in future even while you're on the balcony or in the garden.

Connecting to an existing intercom

Please check in advance whether your intercom has a suitable terminal for connecting a floating (potential-free) transmitter. Due to the large number of models available on the market, we unfortunately cannot provide information on this. You can get this information from the manufacturer of your existing doorbell system.

²Connection to a battery-powered gong is not possible.

Technical data

Frequency & transmit power: 433.92MHz ASK, > 10dBm
Power supply AC/DC operating mode: 5-24V AC, 50Hz / 6-32V DC
Power supply VBAT operating mode: CR2032 coin cell
Transmit current / standby consumption: < 15mA / < 2μA
Use: indoor use only
Range: open field approx. 200m, building approx. 50m
Operating environment: -20-85°C at 45-85% RH
Dimensions (H x W x D): 3.05 × 6.5 × 1.5 cm
Weight: 15g

Contains: 1x Metzler radio transmitter MT4.0