Profile: Electronic Technical Services, Inc. is a designer and builder of special purpose electronic products. Our product line includes Sound Surveillance™ microphones, speaker, surveillance kits, interface equipment, monitoring stations, switchers, mixers, access control card reader, timers and relay boards. Our flush mount omni-directional microphone connects directly to our switcher / mixer / amplifiers or use one of our many interface products to make fast and clean connections to DVRs or remote monitoring equipment.