... and quality reliable products Component parts:The intercom petrol system consists of the following several parts: many sets ... C~+60°CStorage temperature-40~70°CDimension120mmX76mmX21mmRFID Reader1.Guard tour system combines interphone, two in one.2. Wireless& auto- ... and price and high reliability, can be widely used in public safety, construction site, transportation, agriculture, forestry, field, ...