The Radionics RCFD-UML-26BL is an electronic ballast for 1 or 2 CFM18W (triple, hex, multi), 1 or 2 CFM26W (triple, hex, multi), 1 or 2 FT18W (PLL, Long Twin Tube) or 1 or 2 FT24W (PLL, Long Twin Tube) compact fluorescent lamps. The RCFD-UML-26BL has quick connects on the bottom of the ballast. It is a programmed start ballast* and operates on 120-277Vac. It measures 4.92 x 2.37 x 1.12 inches.
*A programmed start ballast for fluorescent and UV-C lamps extends lamp life by gently preheating the electrodes before ignition. This "programmed" preheat prevents electrode damage, making it ideal for applications with frequent on/off cycling, like offices with occupancy sensors. While it causes a slight delay in illumination and costs a bit more, its ability to significantly prolong lamp life makes it a cost