Designed specifically to prevent Network Intervention - easing the evolution from the old analogue to a digital network, incorporating DigAlert technology and high fidelity. Hands-free operation delivers unmatched network and user safety benefits. Features:  Loudspeaker listening  Volume boost  LED Mode Indication  DigAlert Digital Lockout & Alarm  DigAlert High Voltage Lockout & Alarm  Proof tested to IP67  Microphone mute  Battery low audible tone  Tone/Pulse  Redial (10 x 24 memories)  Selectable ringer tones  Super Hi Impedance Polarity  Super Hi Impedance Monitor  Warble ringer  High impact resistance  Rugged belt clip  3-Year Warranty |