TACHOMETER The FT3405 Tacho HiTester has a detection distance 2.5 times greater than its Hioki predecessor, extending the distance from moving parts for added safety. Tester is built tough to withstand a 1-meter drop onto a concrete floor. By using the optional Z5003 contact adapter, the FT3405 becomes contact-type tachometers. The red LED lets you continuously focus on the measurement spot even when testing from afar. IP50 dust-proof structure makes the FT3405 Tacho HiTester tough against the dirt and dust that are unavoidable in field environments. Features:  Non-contact detection distance of 500mm ensures safety for the user Dustproof construction and drop-proof to 1 meter Wide measurement range of 0.5000 r/ s ( 30.00 r/ min) to 99990 r/ min Contact style testing available with optional contact adapter Includes:  LR6 alkaline battery × 2 Carrying case × 1 REFLECTIVE TAPE 9211 × 1 sheet ( 30pieces/ 12mm ( 0.47in) × 12mm ( 0.47in) per piece)