Anyone use this?? Just got a super cheap offer for one. Eguard Continuously monitors your oil pressure, charging system and battery health If oil pressure fails, an alarm is sounded moderately, then increases louder to be heard over open exhaust If a charging problem occurs, a warning is sounded; the alarm is repeated every minute until the problem is resolved Small, compact size fits easily under seat or tank Installs in less than one hour with no stripping, soldering or taping necessary For any 4-stroke motorcycle, ATV, snowmobile or watercraft engine with a battery Measures 1 7/8 in. x 1 1/2 in. x 7/8 in.