AT-LED 24V Dimmer for 802.3af/at; Wireless receiver for on/off/dimming; For constant voltage 24V LED; Used with wireless switch; Input: 44-57V POE input; Output: 24V24W 802.3af/at compliant PoE driver Wall mount driver: 49mm x 57mm x 22mm 2 pairs PoE operation 802.3at/af 25W at 24V requires 802.3at 24v12W requires 802.3af Bayonet-style terminal block for direct access to wires Internal DC-DC conversion Input voltage 44-56V converted to 24V No internal current limiter Maximum current 1.1 amps in 802.3at Maximum current 550 mA in 802.3af 433 MHz wireless receiver Operating environment: Indoor Operating temperature range - 0 to 50 degrees Celsius Storage temperature range - 0 to 50 degrees Celsius Relative humidity range - 5 to 90% non-condensing The device is PELV per NFPA Standard 79 - Protected Extra Low Voltage No cooling required, no fans required. Quiet operation Optional wireless switch-AT-WS Wireless receiver at 433mHz Wireless. Battery-Free. Smart. You can control one driver with multiple switches or multiple drivers from one switch. Simply sync the switch at the time of installation. Color: Black Material: plastic Package Contents: 1 * PoE driver 1 * wireless switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.