Contactum single channel metering device. * Single channel * Non MID Contactum Metering & Surge Protection Metering Device Single Channel (Non MID). This device is a three-phase power energy monitor and features a DIN rail mount. It measures Current, Frequency, and Voltage. The power source is Mains and it has a minimum operating temperature of -5°C. It has an LCD display. MPN: DDB-SCMKIT.