1-Channel Relay Controller Module (KY-019)


Recommended for Arduino starters!


30 in stock

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SKU: DVR-RELAY01 Category: Tags: ,


This relay module is designed to control small electrical objects such as motor, pump, lamp, and other devices that require high voltage and high current to operate. The logic level of this module is positive, which means you need to feed a HIGH (3 – 5V) signal to the Signal ‘S’ pin to activate the relay switch. Feed a LOW (0V) signal to the input pins to deactivate the relay switch.

Be very careful when handling the relay with AC power source, mishandling can cause electrocution, short-circuits and unwanted consequences!


  • Operating Voltage : 5V
  • Logic Voltage : 3 – 5V
  • Positive logic control, input HIGH signal to the S pin to activate the relay.
  • 4 screw mounting holes for easy installations


Operating Voltage5V
Relay Coil Current70mA per channel
Load Voltage250VAC or 110VDC max.
Load Current10A max.
Contact Resistance100mΩ
Response Speed10ms
Maximum Switching Frequency300 operation per minute


Truth Table

Input SignalNormally-Open (NO) OutputNormally-Closed (NC) Output

Additional information

Weight20 g


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