STM20 belongs to RECORD automatic sliding door control series with metal housing for DIN rail mounting. Power supply DC24V, supports dual-motor control for double-leaf sliding doors. Two firmware variants: RED version: EN13849-1 Category3 PLd, certified for escape and rescue passage; DUO version: EN13849-1 Category2 PLc, designed for heavy door leaves.

It integrates safety terminals for emergency stop, safety edge, door position feedback and encoder signal reading. Onboard LED indicators display power, fault and safety status for on-site troubleshooting. Parameters can be set via built-in keys to adjust door opening speed, hold time and force limit. Protection class IP30, operating temperature -20~+60℃.

STM20 is obsolete RECORD door controller spare part. Many existing automatic door installations still use STM20 systems. When the original module fails, replacement with identical STM20 RED/DUO can reuse wiring, motor cables and sensor connections. Technicians install the module, set door parameters and test door opening/closing and safety protection, so the automatic sliding door control system resumes operation and reduces downtime.

Before shipment, every STM20 undergoes comprehensive functional inspection including power-on self-test, safety input test, motor drive test and LED indicator check. All products come with 12-month warranty. Our automation technical team provides remote support for installation, wiring guidance, parameter setting and fault diagnosis. Fast global shipping available for urgent maintenance orders.

For automation maintenance engineers and system integrators, STM20 is reliable spare automatic door safety control module for legacy RECORD sliding door systems. It restores door movement control and safety protection functions, extends service life and avoids whole door system renovation.