The Automation Systems Interconnect, ASI, sensor terminal blocks are used to wire up to all types of 3-wire sensors. These sensor terminal blocks are the easiest to use most economical sensor terminal blocks on the market. The ASI 3-wire sensor terminal blocks come already equipped with a bridging accessory on the first and second level so no additional accessories are required. The sensor terminal blocks are also available with LED indication for applications where a visual is needed at the wiring point. To connect to sensors you easily join any number of sensor terminal blocks to a single 3 level terminal block, which is used to bring the power to all sensors.