DALI LED dimmer for separate control of brightness and colour temperature. For ceiling installation. 120x30x22mm. Protection class IP20. Only 0.12 watt standby loss. Designed to control constant voltage LED modules (CV) at operating voltages of 12V to 48V, operating mode DT8: control brightness and colour temperature by a DALI address (Device Type 8, Colour Type Tc) operating mode Balance&Dim: activated via 2 DALI addresses, one to adjust brightness and one to set channel distribution (e.g. colour temperature). Operating mode Dim2Warm: one DALI address to dim and to change the colour temperature at the same time. SwitchDim2: operation via 2 pushbutton inputs permits control of brightness and colour temperature without DALI. Dimming range 0.1%-100%. Switchable PWM frequency (122Hz/244Hz/488Hz/976Hz). Power supply depending on type from 12V to 28V DC or 12V to 48V DC (depending on operating voltage of LED modules). Connected current 16A. The maximum connected current can be distributed to any channel. High efficiency. Configuration via DALI Cockpit PC software and DALI USB interface. Operating modes: The device has several operating modes: DT8 (as-delivered state): in this mode a DALI address (Device Type 8, Colour Type Tc) is used to control brightness and colour temperature. Alternatively, operation can also take place by one or two pushbutton inputs (SwitchDim2). SwD1: brightness. Press pushbutton briefly: On/Off. Press pushbutton long: Dim. SwD2: Colour temperature. Balance&Dim: Control is by means of 2 DALI addresses (or SwitchDim2); one address is used for dimming and the other for channel distribution (i.e., e.g.: tunable white or direct/indirect lighting distribution). The Balance&Dim mode is used to adjust colour temperature without affecting brightness and vice versa. Adjustment is by means of DAKL standard commands such as Dim Up/Down. This permits all customary controls and gateways (e.g. KNX). This control option is an alternative to DT8-Tc mode. Operable via DALI or SwitchDim2: DALI address 1, SwD1: brightness. DALI address 2, SwD2: Balance. Dim2Warm: The two output channels are controlled by a DALI address or an SwD input. Channel distribution is permanently coupled to the dimming value. The smaller the dimming value, the warmer the light. DALI address 1, SwD1: Dim2Warm (Master). Press pushbutton briefly: On/Off. Press pushbutton long: Dim.