The Wall Switch Lockouts feature a tamper-proof design that protects against vandalism and accidental breakage. Hinges for both Universal and Standard design open for unobstructed normal switch operation. Universal design locks out both toggle and Decora wall switches, and features durable solid steel U-bolt hasp with malleable steel lock plate that provides maximum security and are suitable for most toggle/single/three-way electrical switches. The Standard design fits most wall-mounted single or three-way electrical switches. All Wall Switch Lockouts are RoHS compliant.