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Waterproof tested to an IECIP67 rating, these test sets are so impervious to water they can actually withstand submersion.
Built-in ADSL Filter. Ten-number speed dial memory (32 digits each). Last number redial. Precise hook flash. Microphone mute. Audible and visual mode indicators. Polarity test in any mode. Unique quick-release belt clip. Premium cord set with bed-of-nails and piercing pin clips. Luminescent Keymat.