"smart" laser sensor can learn with an auto gain feature to provide the best performance for a specific target. The SLS has many features including an On-target indicator, TTL pulse output inverter, Manual sensitivity fine tuning, RS-232 output, internal rechargeable batteries or external DC power. This sensor is ideal as a trigger source for portable balancing equipment, vibration analyzers and data acquisition. The compact design is 5.4"(L) x 2.35"(W) x 2.14"(H) and is provided with a 1/4-20" tripod mounting bushing. Speed range is 1-150,000 RPM. Available with a variety of output cables and VAC 115 or 230 re-charger.