■ PRIORITY SELECTION
    Outputs first signal received while muting other inputs.
■ TWO-WIRE AND THREE-WIRE SYSTEM OPERATION
    Controls speaker relay via standard two-wire system or via three-wire emergency system.
■ INTEGRATES WITH OTHER INTER-M PRODUCTS
    Designed to work exclusively with the Inter-M PX-6116 Matrix Switcher, Inter-M EP-6216 Emergency Panel,
    Inter-M RG-6116 Relay Group, Inter-M PW-6242A Timer, and Inter-M ES-6116 Emergency Switcher.