OELD is a smart junction box for either a Searchpoint Optima Plus or Searchline Excel gas detector. In addition to serving as a 4-to-20 milliamp (mA) communications bridge between the detector and the controller, the gas sensor junction box includes an LCD screen for gas concentration and other information, as well as a traffic-light indicator for at-a-glance safety status — all in a robust metal housing and with a wide range of approvals. OELD includes Bluetooth Low Energy (BLE) technology that simplifies your experience with the detector. With BLE, you can pair the OELD with a mobile phone and then use an app to perform many commissioning and maintenance tasks on the detector with less time and effort. And since the BLE method is non-intrusive, it also reduces safety risk.