BJ Enterprises 007-Jarhead Tank Monitor combines a Jarhead tank gauge with a 007 tank alarm to indicate tank volume while providing audible and visual warning of a low or high tank level. The low-voltage, supervised 007 tank monitoring system is designed for use on most single- and double-walled above-ground tanks, primarily used to help prevent costly and unnecessary tank overflows/shortages by sounding a 103-decibel siren and flashing a strobe light when the preset float is activated to an alarm condition. The sight-glass of the Jarhead tank gauge indicates contents in 1/4-tank increments with an orange indicator, by means of a nitrophyl float, and the large, 4-window display is also highly visible and easily read from any direction. This easy-to-install, 3-piece unit is engineered to control up to 10 solenoid valves, diaphragm pumps, and/or electric pumps, as well as additional strobes and sirens, with a 12-Volt DC transformer. The 007 unit also features a control panel that is mounted indoors and a remote tank sensor that fits any 2" tank bung opening, while the Jarhead features an aluminum linkage, stainless steel rods, and 2 NPT threads. Tank depth must be specified in inches when ordered, but all depths from 18" to 72" are available.