This 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 120-volt AC operation. Also available in 4" and 12" models as well as a 12" w/cutter.