ME8104 / TZ8104 Rotary Roller Arm Limit Switch (Momentary) A compact, mechanical limit switch designed to provide reliable, repeatable endpoint detection and momentary actuation in industrial and automation systems. The ME8104 (also listed as TZ8104) uses a rotary roller arm actuator to convert motion into a precise electrical signal, helping protect equipment, improve safety, and ensure accurate control. Key benefits Accurate position detection: Rotary roller arm design gives consistent, repeatable actuation for endoftravel and position sensing. Protects equipment: Detects limits and stops motors or sequences before overtravel causes damage. Simple integration: Mechanical, momentary switching action is easy to add to existing control circuits or designs. Reliable performance: Designed for frequent mechanical actuation where a short, positive contact closure is required. Key attributes Model: ME8104 (TZ8104) Actuator type: Rotary roller arm Switch action: Momentary (temporary contact while actuator is engaged) Functionality: Mechanical limit switch for endpoint and position detection Construction: Robust design suitable for industrial and automation environments Mounting: Standard mounting for straightforward installation Wiring: Accessible terminals for connection to control circuits Typical applications Conveyor systems: Detect product position, stops, or endofline conditions and trigger sorting, stopping, or indexing actions. Machine tools and automation: Provide limit detection on axes and moving parts to prevent overtravel and support homing routines. Access control and gates: Sense open/closed positions for doors, gates, and barriers to coordinate motors and safety interlocks. Robotics and packaging: Momentary position sensing for pickandplace cycles, endofarm tooling, and intermittent contact detection. Installation and use Mount the switch so the roller arm engages the moving element at the intended travel point. Adjust bracket or arm position for correct actuation timing. Connect to your control circuit using the switch terminals. The momentary contact closes only while the actuator is pressed and releases immediately when the actuator returns. Check mechanical alignment and actuation force during commissioning to ensure reliable, repeatable operation. Models and ordering ME8104 (also referenced as TZ8104) rotary roller arm limit switch, momentary action. If you need a straightforward, mechanical solution for reliable limit detection, the ME8104 / TZ8104 rotary roller arm limit switch delivers repeatable momentary actuation for a wide range of industrial and automation uses.