【Compatible with Hubbell HBL1209 Wall Switches】This 4-pack fork key set is compatible with Hubbell HBL1209 tamper-resistant wall switches, commonly used in schools, hospitals, office buildings, and public facilities where AC power and lighting need controlled access for safety and maintenance purposes. 【Dual-End Key for Legacy and Modern Locking Switches】Each key features a forked end for older AC locking switches and a flat end for current tamper-resistant models, making it ideal for facilities that maintain mixed generations of wall-mounted electrical switches across multiple zones or departments. 【Compact Size with Quick-Access Hanging Hole】Each key measures 1.9" x 0.51" and includes a center hole for attachment to lanyards, keychains, or tool pouches, making it easy for electricians, technicians, and custodial staff to carry during inspections, maintenance, or power control tasks. 【Durable Material for Industrial and High-Traffic Environments】Made from corrosion-resistant and waterproof material, this key is built for repeated use in humid, dusty, or high-touch areas such as factories, mechanical rooms, utility closets, and public lighting systems. 【4-Pack for Multi-Staff or Multi-Room Control】 Includes four identical keys, great for distributing to maintenance teams or installing across several switch zones, helping prevent delays caused by missing keys and improving response efficiency in emergencies or daily operations 【Responsive Support for Installation or Fit Questions】Our team is ready to help with any questions about switch compatibility, usage, or installation. If you're unsure whether this fork key fits your Hubbell setup, feel free to reach out for quick, helpful support. Wall Switch Key for Standard Locking Switches, Sold in Packs of 4