Profile: Oyster Terminals UK Ltd. designs and manufactures rugged handheld terminals. Traffic light controller terminal is used for interrogating the sequencing set up and changing the parameters of traffic lights. The terminal can be used in conjunction with siemens, microsense, GEC & peek traffic and other mainstream roadside cabinets. Our battery or host powered handheld terminals, programmable in BASIC, C or assembler. They are ideal for configuration, interrogation & programming of host equipment as well as data collection and system control.