The apsrm4 remote control module lets you monitor and control your tripp lite powerverter inverter pv series or invertercharger rv aps and ems series from up to 50 feet away ideal for automotive remote site industrial commercial and residential applications the apsrm4 mounts easily in a variety of locations and configurations including below a dashboard so you can control your inverter or invertercharger from the comfort of your vehicle monitor battery charge level and the conn