IDEC SA1P 5V USB Powered Portable Sensor Checker is a compact, lightweight component used to perform equipment testing and continuity checks on 24VDC devices. The SA1P Checker features push-in terminals that allow easy wiring and eliminate the need for tools. With an external USB battery for power, the SA1P can be used on-site or in the lab, with connections available for up two 24VDC devices simultaneously. Other features include NPN/PNP output up to 200mA, scale markings for easy measurement distance detection, and a -10°C to +50°C operating temperature range. The SA1P 5V USB Powered Portable Sensor Checker comes with a fastening belt, USB cable, and strap to prevent dropping.