The Sirchie Impulse Evidence Bag Sealer with Cutter 12"(30.48cm) is an excellent tool for crime scene search personnel. Integrity of evidence is assured with heat sealing of polyethylene bags. Just plug in and use-warm-up time is not required. Use it with any heat seal type evidence bag. The sealer features a time/temperature control, cast aluminum fabrication, 2mm seal width and 110-volt AC operation.