An electric heat sealer for sealing workpieces such as plastic bags or the like includes a casing defining a battery chamber, a press bar pivotally connected to the casing, a sealing mechanism supported on a compression spring in a spring holder inside the casing, and a safety device. The method of this invention can be applied to detecting the presence of a characteristic in an object. The adapter routine, in conjunction with a Java Native Interface and a CIM to WMI mapper enables CIM operations to be performed on a managed server having for example, a Microsoft Operating System or XML based communications. In addition, a transmission OXC transmits the transmission rate to an OXC aligned between the transmission OXC and the receiving OXC, thereby stabilizing the OXC.