Keyence GV-21 Digital CMOS Laser Sensor
The GV-21 is a high-performance laser sensor amplifier unit, designed for precise measurement, efficient control, and seamless integration with industrial automation systems. With dual-channel NPN outputs, high-speed response times, and adjustable power-saving modes, the GV-21 delivers reliable performance in demanding environments.
Technical Specifications
Model: GV21
Type: Amplifier Unit, Main Unit
Power & Consumption
Power Voltage: 10 to 30 VDC, including 10% ripple (P-P), Class 2
Power Consumption:
- Normal Mode: 2200 mW max. (at 30 V: 73.3 mA max.)
- Eco-Half Mode: 1700 mW max. (at 30 V: 56.7 mA max.)
- Eco-All Mode: 1600 mW max. (at 30 V: 53.3 mA max.)
Display & Indicators
Display Type: Dual 7-segment LED display
- Current Value: 3-digit red LED indicator
- Preset Value: 3-digit green LED indicator
- Bar LED Indicator: 2-color, 13-level (Red, Green)
Operation Status Indicators:
- Control Output: Red LED x 2
- Channel Display: Green LED x 2
- Laser Radiation Emission Indicator: Green LED
- Other Indicators: Green LED x 2, Red LED x 3
Input & Output Specifications
Control Output:
- NPN Open Collector x 2 Channels
- Voltage: 40 VDC max.
- Max. Load Current: 100 mA
- Residual Voltage: 1 V max.
Control Input:
- Emission Stop Input
- Bank Switching Input
- Shift Input
- Timing Input
- Each Input Response Time: 20 ms
Response Time
- Selectable Response Time: 1.5 ms / 3 ms / 10 ms / 20 ms / 50 ms
Environmental Resistance
Enclosure Rating: Designed for control panel installation
Ambient Temperature: -10°C to +55°C (No Freezing)
Relative Humidity: 35% to 85% RH (No Condensation)
Vibration Resistance: 10 to 55 Hz, Double Amplitude 1.5 mm, 2 Hours in Each of the X, Y, and Z Directions
Material & Construction
Housing Material: Polycarbonate
Display Cover: Polycarbonate
Key Top: Polyacetal
Cable: PVC
Weight: Approx. 110 g
Included Accessories
- Instruction Manual
- Mounting Bracket
Key Features & Benefits:
✅ Dual Output Control: Two independent NPN open-collector outputs for versatile operation.
✅ Multi-Mode Power Consumption: Eco-friendly modes reduce power usage while maintaining performance.
✅ Fast Response Times: Selectable from 1.5 ms to 50 ms for high-speed processing.
✅ LED Display & Status Indicators: Clear real-time feedback on measurement values and system status.
✅ Robust Industrial Design: Resistant to vibration and environmental factors for long-term durability.
📦 Order Today for Fast UK & Europe Delivery!
At Drive Outlet Megastore, we offer the best GV-21 prices, with same-day and next-day shipping across the UK & Europe.

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