The L22DR01 is a Ø 40 mm emergency stop button head designed for safety-critical applications requiring immediate machine shutdown. It features a stay-put mechanism with push-pull reset operation and a yellow collar that provides visible head position indication from the side, ensuring operators can confirm the emergency stop state at a glance. The unit is equipped with a locking ring, plastic black bezel, and achieves IP 66 protection rating, making it suitable for harsh industrial environments. It conforms to IEC 60947-5-1, IEC 60947-5-5, and EN 418/ISO 13850 standards, with NC contacts providing positive opening for fail-safe operation. The device operates over a temperature range of -25°C to +70°C and withstands vibration per IEC 60068-2-6. This emergency stop head is commonly used in industrial control stations, machinery safety systems, and automated production lines where reliable emergency shutdown capability is mandatory.