Luminescent marking registration sensor / switch with diffuse sensing + coaxial optics + focused beam + TEACH-in mode - Balluff (21M series) - model BLT 21M-001-P-S4 - 0-40mm sensing range - Ultraviolet (UV) light (370nm) - Pre-equipped with a 4-pin M12 male connector - 1 x digital output (PNP transistor; 100mA) (NO (Normally Open) or NC (Normally Closed) operation) - Rectangular shape - 10-30Vdc (12Vdc / 24Vdc nom.) supply voltage - Rated for +14...+131°F / -10...+55°C ambient - IP67 - Powder-coated die-cast Zinc housing + Aluminium housing + Glass sensing surface - 2000Hz / 2kHz max. switching frequency - Surface with through-holes (M4 screw) mounting - time function ON / OFF setting - equivalent to BLT21M001PS4