OPTEX BXS detectors 862-22-BXS-R OPTEX Xwave2 BXS SHIELD wireless outdoor detector 862-01-BXS-AM OPTEX BXS wired detectors 862-01-BXS-ST OPTEX BXS wired detectors 862-01-BXS-R-LC OPTEX BXS wireless ready - low current detectors 862-22-BXS-RAM OPTEX Xwave2 BXS SHIELD wireless outdoor detector 862-01-BXS-RAM-LC OPTEX BXS wireless ready - low current detectors