GMS-852: White COB light output 250 lumen,detection range 3 meters. Can be used as a constant light by setting to “on” position, operate as a sensor light(operates in dark) by switching to “Auto” mode. Includes two magnets and 2pcs metal with adhesive tape. Working by 4 AA batteries(not included). GMS-854B Warm COB light output 70 lumen,detection range 3 meters. Can be used as a constant light by setting to “on” position, operate as a sensor light(operates in dark) by switching to “Auto” mode. Includes mounting bracket, fixings and working by 3 AAA batteries(not included).