For regular monitoring of their field service management, the CalAmp LMU-920 GPS tracker allows you to program different SMS alerts that can receive in a predefined mobile phone, it is also possible to update the configuration or firmware via OTA. The interface connections for external devices with LMU-920 of CalAmp is as follows: 4 digital inputs, 4 digital open collector outputs (150 mA) and 2 analog inputs. Although presented with this interface, the CalAmp LMU-920 GPS tracker already covers almost any requirement for GPS vehicle location and if you need to increase the features you can purchase the following extras: 1 converter cable to connect directly to the OBDII port, 1 cable for interrupting ignition in their automatic vehicle dispatch or dispose of GPS/GSM internal and external antennas. Using LMU-920 in our GPS tracking platform you can control tehir vehicle event management and manage some scheduled reports or you can control their vehicle preventative maintenance that help you to reduce company cost, also you can use our REST API to connect existing applications at no additional cost. Also in our GPS tracking platform, you can manage their vehicle efficient driving and control their vehicle care driving or also manage the control of driving habits of their driver´s. With our LMU-920 you can use our mobile applications for vehicle tracking without extra cost and you can manage the hours of service control of their drivers or you can also manage their automatic vehicle dispatch depending of your need.