Radio transmitter 4 channel FS3 U4

4 inputs for external pushbuttons
fully compatible to transmitter/receiver/dimmer of FS3-/FE3-/FD3-series
address with 6561 possibilities adjustable
3 operation modes:
- pushbutton mode
- interval transmission with 10s or 30s
- only 3 transmission intervals with 10s
free field range 50m (no external antenna)
small housing (fits in flush-mounted switch box)
3 variants (230V AC, 12-24V UC, 3V DC battery)

General
The built-in radio transmitter FS3 U4 controls Schalk radio receiver relays and dimmers of the Fx3 series. There are 4 inputs for pushbuttons.
The transmitting address is preset with a DIP switch. With the coding switch "Mode" the transmitter can be adjusted in a way that all buttons/levels of our handheld transmitters can be simulated.
In "Key mode" the FS3 U4 behaves like a hand-held transmitter. In the "interval transmission" mode, long pending switching states (motion detectors, heating thermostats, etc.) can also be transmitted without disturbing other radio links. The mode "only 3 transmission intervals" allows e.g. the central control of roller shutters via a simple time switch. These are then already 3 intervals (30 s) after the time switch signal again locally operable, although the contact is still present.

Application
Especially when retrofitting existing installations, wireless signal transmission is often the only economical and technically justifiable solution. Almost any electrical consumer can be controlled with the associated receiver switches and dimmers.