3 the di/do schematic – Eneo GLS-2302H User Manual
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3.3 The DI/DO Schematic
DI
Receives signals from a reed switch, vibration sensor, or any other external security device
DO
Connects to an alarm or buzzer
485+/485-
Connects to an RS-485 interface for controlling auxiliary equipment such as an external camera
enclosure for pan, tilt, and zoom functionality
Photo Relay
Photo Relay
Photo Relay
RS-485 Transceivers
Reed Switch
Vibration Sensor
ALARM
RS-485 Device
DI 1+
DI 1–
DI 2+
DI 2–
DO +
DO –
485+
485–