The T800ESB-E is bulk packed with no retail display box. It includes mounting zip ties and warning sticker. The TxxxES-E units comes with a Single Pole, Single Throw pressure switch installed. While the unit is pressurized the switch is open. When the unit discharges the switch closes completing a circuit. Pair these with our AWB012 for a simple, 12v audible and visual panel mount alarm. You can also incorporate the switched units into relays and custom wiring to achieve your goals. Protected enclosed space: 2.49 - 4.02 cubic meters electrical applications 1.89 - 3.06 cubic meters engine/fuel applications Operating Temperature: -40°F to +194°F Activation Temperature: 221°F Activation Pressure: 348 psi ± 14 psi Clean Agent: HFC227ea Amount of Agent: 5.93 lb ± 0.35 oz