The indoor and outdoor housings have been improved to withstand a variety of environmental conditions, and they feature alarms and relays for direct wiring to nearby sensors.
相机室内和室外外壳已得到改善，能经受各种环境条件考验，它们能将警报和继电器直接连线到附近的传感器。
The indoor and outdoor housings have been improved to withstand a variety of environmental conditions, and they feature alarms and relays for direct wiring to nearby sensors.
相机室内和室外外壳已得到改善，能经受各种环境条件考验，它们能将警报和继电器直接连线到附近的传感器。
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