4-Channel AC Detector Module (50~250VAC)

ACD4-HV is an isolated AC voltage detection module designed to detect the presence of 50–250 VAC and provide an isolated 3–24 V active-high output for interfacing with microcontrollers, PLCs, and other low-voltage control systems. Optical isolation using a PC817 optocoupler, together with PCB isolation slots, provides electrical separation between the high-voltage input and low-voltage output. An onboard LED indicates the presence of AC voltage.

Features:

• Detects 50–250 VAC input voltage.
• 3–24 VDC active-high output.
• Compatible with 3.3 V, 5 V, 12 V and 24 V control systems.
• Capacitive AC input for low power dissipation and reduced heat generation. 
• Optical isolation.
• LED indication of AC presence.
• Screw terminal connections for AC input and DC output.
• Mounting holes compatible with DIN rail adapters.
• Dimensions: 50 X 73.2mm.