The XA_701L40106 is a genuine spare key start switch designed for Conductix Saga L40 Series “belly_box” style radio remote transmitters. This compact, keyed switch is used to enable or disable the transmitter’s RF transmission, serving as a security and safety interlock. It's essential for authoritative control and preventing unintended operation. Key Features: Direct OEM replacement for L40 transmitter keyed start switch Security-enabled control—requires a physical key to activate radio signals Compact, field-replaceable design weighing only 0.02_lb Enhances operator safety by ensuring intentional system activation Exact form-fit replacement—installs seamlessly without modifications This switch is a vital spare for maintenance kits, enabling secure control restoration in field-serviced transmitters or during hardware replacement.