Modbus-RTU I/O
Distributed Expansion Modules
All modules connect via RS-485 Modbus RTU Master to your SCADA Server, Web Server, PLC, or any compatible Modbus master. Mix and match modules to build the exact I/O footprint your application needs.
VS-DAIO
Analog & Digital Expansion Module
- 2 Voltage (0–10 V) / Current (0–20 mA) Inputs
- 2 RTD Inputs (PT100, Ni120, PT1000, Ni1000, Resistance)
- 1 Voltage (0–10 V) or Current (0–20 mA) Output
- 4 Digital Inputs
- 2 Digital Outputs
VS-8AIV
Analog Expansion Module
- 8 Analog Voltage Inputs (0–10 V)
VS-8DIO
Digital Expansion Module
- 8 Digital Inputs
- 8 Digital Outputs (Open Collector)
VS-4RO
Relay Expansion Module
- 4 Relay Outputs
VS-6RTD
RTD Expansion Module
- 6 RTD Inputs (2- or 3-wire)
- PT100, Ni120, PT1000, Ni1000, Resistance
VS-8AIIS
Isolated Analog Expansion Module
- 8 Current (0/4–20 mA) Isolated Inputs
Featured Accessory
Ultrasonic Tank Sensor
Ultrasonic Tank Sensor
Real-Time Tank Level Monitoring
An accessory to the VirtualSCADA® remote management solution. View the exact content level of your tanks in any web browser, and receive immediate alarms when the level is too low or drops too fast — flagging potential theft or leakage.
- Compatible with all VirtualSCADA SCADA Servers
- Ultrasonic sensor: 0.25 – 6.5 ft range (80 – 2000 mm)
- Built-in temperature and vibration compensation
- 0.02" (0.4 mm) resolution — 99.9% accuracy
- Install up to 300 ft (100 m) from gateway
- No calibration needed
- Tamper-proof + built-in theft detection
Antennas
SCADA Server Antennas
GSM Right Angle Antenna
Quadband, Right Angle, SMA
Compact quadband right-angle antenna with SMA connector. Mounts directly to the SCADA Server for installations with line-of-sight to a cellular tower.
GSM Antenna — Bracket Mount
Quadband, 15 ft Cable, SMA
Quadband antenna with 15 ft (5 m) cable and mounting bracket. SMA connector. For permanent installations on walls, masts, or enclosures.
GPS Antenna
Active, Waterproof, Magnetic Base, SMA
Active waterproof GPS antenna with built-in LNA delivering 28 dB of gain. Magnetic base for easy mounting on metal surfaces. SMA male connector, 3 m (10 ft) cable. Powered from 3 – 5 VDC supplied through the antenna line.
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