Standard Horizon SSM-517A Earpiece Microphone f/HX270, HX370, HX471 HX400 [SSM-517A] Brand_Sufix Allows variable parameters to be

Allows variable parameters to be set for CPA and TCPA alarms

rugged construction and design features that make it ideal for portable summer and winter use

Line Entry L: 1-3/4"

Safe for all finishes including paint

Green Color: (3-3W CREE LEDs)

Standard Horizon SSM-517A Earpiece Microphone f/HX270, HX370, HX471 HX400 [SSM-517A] Brand_Sufix Allows variable parameters to beSSM 517A Earpiece Microphone for HX270, HX370, HX471 & HX400 The Standard Horizon SSM 517A Earpiece Microphone is compatible with HX270, HX370, HX471, and HX400. Specifications: Type: Microphones Box Dimensions: 1"H x 3"W x 4"L WT: 0. 15 lbs UPC: 788026176373