... software, a special tour data cables. Feature1.Guard tour system combines interphone, two in one.2. Wireless& auto-identification ... convenient,just need to install more checkpoints , no need wiring, saving costs. 4. Patrol location. Patrolman’s position ... -30°C~+60°CStorage temperature-40~70°CDimension120mmX76mmX21mm Application* Residential,office building, hospital, hotel, school, factory patrol and ...