The UM-40AC is a low-cost, utility, AC voltage measuring meter with range of 0 to 700.0V AC. The unique resistively isolated differential input of this meter allows safe measurement of phase to phase voltages, making it a effective solution to most high resolution AC voltage measuring applications. The standard meter is provided with TB-KIT screw terminal blocks and insulated quick- disconnects. For the greatest convenience and ease of use, order the optional pre-configured Push-On screw terminal connectors. (see Push-On Screw Terminals and Ordering Information)