PWM dimmer switch with 4 channels for LED 12-36 V DC, each up to 2 A. Minimum brightness and dimming speed adjustable. Features snooze and light alarm functions. Additionally, light scene control via PC or with remote buttons. Encrypted wireless, bidirectional wireless, and repeater function can be activated. Standby loss is only 0.3-0.5 watts. Suitable for installation in suspended ceilings and fixtures. Dimensions: 252 mm long, 46 mm wide, and 31 mm deep. Includes cable strain relief. The set brightness level is saved when turned off (memory). In case of a power outage, the switch position and brightness level are saved and can be activated when power is restored. Automatic electronic overload protection and over-temperature shutdown. Encrypted sensors can be learned. Bidirectional wireless and/or a repeater function can be activated. Any state change and received central control telegrams will then be confirmed with a wireless telegram. This wireless telegram can be learned into other actuators and the GFVS software. The GFVS software also displays the current dimming value in %. The upper rotary switch is only needed for learning. The middle % rotary switch can be used to set the minimum brightness (fully dimmed). The lower dim-speed rotary switch allows you to set the dimming speed. The buttons can be learned either as direction buttons or as universal buttons: as direction buttons, one side turns on and dims up, while the other side turns off and dims down. A double-click on the turn-on side triggers automatic dimming to full brightness at dim-speed. A double-click on the turn-off side activates the snooze function. As universal buttons, the direction is reversed by briefly releasing the button.