SM1P-Ex intrinsically safe headset with headband Multi-Link ACP Automatic Call Processor ACP-300 Complete antenna, magmount, and cable assembly for w*intercom station.
SM1PBIS01 intrinsically safe headset with headband The Stick - Automatic Call Processor  Line Sharing Device. The Stick automatically screens and routes all incoming voice, fax, and modem calls to the right equipment every time so there is no need for multiple costly phone lines. Heavy Duty 5.8 GHz 6 dBi Omni Antenna
SM1PEIS01 intrinsically safe headset behind the next style SM1PHIS01 intrinsically safe headset helmet style