PWM dimmer switch for LED 12-36VDC, up to 4A. Standby loss only 0.2-0.4 watts. Minimum brightness and dimming speed adjustable. With children's room and snooze function. Also with light scene control via PC or with radio buttons. Encrypted radio, bidirectional radio and repeater function can be switched on. For recessed installation. 45mm long, 45mm wide, 33mm deep. Supply voltage 12 to 36V DC, depending on the connected LED lighting. Output voltage PWM (pulse width modulation). Maximum output current 4A. A pulse-proof DC power supply is required which supplies the required voltage and current of the LED lamp(s). Universal control voltage 8..230V UC, galvanically isolated from the supply and switching voltage. The set brightness level remains saved when switched off (memory). In the event of a power failure, the switch position and brightness level are saved and, if necessary, switched on when the supply voltage returns. Automatic electronic overload protection and overtemperature shutdown. From production week 11/14, encrypted sensors can be taught in. Bidirectional radio and/or a repeater function can be switched on. The minimum brightness (fully dimmed) can be set using the upper %lamp rotary switch. Up to 35 radio buttons can be assigned in the LRN position, including one or more central control buttons. The dimming speed can be set using the lower dim speed rotary switch. In addition to the radio control input via an internal antenna, this dimmer switch can also be controlled locally as a universal button using a conventional universal voltage control button that may be mounted in front of it. This means that the dimming direction is changed by interrupting the control. Short control commands switch on/off. The radio buttons can be programmed either as directional buttons or as universal buttons: As a directional button, one side can be used to switch on and dim up, and the other side can be used to switch off and dim down. Double-clicking on the switch-on side automatically dims up to full brightness at dim-speed. Double-clicking on the switch-off side triggers the snooze function. The children's room switch is operated on the switch-on side. As a universal button, the direction is reversed by briefly releasing the button. With children's room switch and snooze function. Central button on switches on with a memory value. Central button off switches off. Children's room switch (universal button or directional button on the switch-on side): When switched on by pressing the button for a longer period, the light switches on at the lowest brightness after approx. 1 second and, as long as the button is continued, the light slowly dims up without changing the last saved brightness level.Snooze function (universal button or direction button on the switch-off side): A double pulse dims the lighting from the current dimming position to the minimum brightness and then switches it off. The maximum dimming time of 60 minutes depends on the current dimming position and the set minimum brightness and can be shortened accordingly. The lighting can be switched off at any time during the dimming process by briefly pressing the button. Light scenes on the PC are set and called up using the GFVS building radio visualization and control software. The GFVS description can be found in Chapter V. To do this, teach one or more FLD61s as dimmer switches with percentage brightness values on the PC. Light scenes with radio buttons are taught in on the FLD61. Up to four brightness values that can be taught in a light scene button with a double rocker. Either an FBH can be taught in as a motion detector with/without twilight switch or an FAH as a twilight switch in accordance with the operating instructions. The LED accompanies the teaching process.