Monitor and Control 8 Digital Inputs / 8 Relay Outputs Over Copper or Fiber Ethernet With Real-Time Alerts
The Smart 8 Input Sensor and Relay Output are programmable Ethernet I/O controllers that interface with field devices such as sensors, push buttons, alarms, locks and motors.
Each of the Digital Input and Relay Output channels are configurable through a built-in web management portal, and can be integrated with network management systems, industrial control systems, Internet of Things (IoT) frameworks, and script-driven automation platforms.

The Smart 8 Input Sensor and Relay Output support TLS/SSL encryption, IEEE 802.1X via RADIUS authentication (AAA), role based access control (RBAC), and event logging. Their versatile 2-port (1xRJ45, 1xSFP) Ethernet interface offers network access redundancy and segmentation.
Each device can operate as a standalone unit, independently monitoring and controlling the state of their 8 inputs or 8 relay outputs, or pair together over a secure TLS/SSL-encrypted tunnel.
This System Pairing feature allows Input Sensors to transmit I/O across an Ethernet network to one or multiple remote locations.
Features
- 8 independent channels for monitoring and controlling
- 8 Digital Inputs / 8 Relay Outputs
- SPDT-style relays simplify Normally Open or Normally Closed relay configuration
- Optically isolated Digital Input channels that ensure signal integrity and protection against surges
- Hardened to operate in -40°C to +70°C (-40°F to +158°F)
- DIN rail or Wall Mount (Wall mount ears included)
- 12-48VDC and 125VDC models available with redundant power terminals
- Relay Outputs support up to 3 Amps of current and 60 Watts of power
- Designed, Engineered, and Assembled in the USA
- Covered by our Lifetime Warranty
Please see the product documentation for the complete list of specifications
Power:
Power Input: 12-48VDC (11-53VDC)
-A powering option: 125VDC (42~160V)
Dual Redundant Power Inputs – Polarity insensitive
Power Consumption: 6 Watts Maximum
DC Input Isolation (In/Out):
1.5kV *For -A power option models only
Overcurrent Protection:
1.0A Automatic Recovery
Operating Temperature:
-40˚C to +70˚C (-40˚F to +158˚F)
Storage Temperature:
-40˚C to +85˚C (-40˚F to +185˚F)
Humidity:
95% non-condensing
Dimensions:
H 4.93” x W 2.0” x D 3.93” (125mm x 51mm x 100mm) – not including DIN clip
Weight:
1.6 lbs. (0.73kg)
Mounting:
Standard T-35 DIN rail clip and wall mount ears (Included)
Compliance:
RoHS and REACH
Warranty:
Lifetime – Visit www.fiberopticlink.com for warranty information and coverage details
Product Information
CAD Files
SM8-IN-DR-1
SM8-IN-24-1
SM8-IN-48-1
For product questions, volume pricing and/or delivery outside of the US and Canada, please contact sales.
Ordering
Smart 8 Input Sensor
Short description | Part number | Price | |
---|---|---|---|
Smart 8 Input Sensor, 8 Digital Inputs (Dry), Powered by 12-48VDC | SM8-IN-DR-1 | $650.00 | |
Smart 8 Input Sensor, 8 Digital Inputs (Wet 12-24V), Powered by 12-48VDC | SM8-IN-24-1 | $650.00 | |
Smart 8 Input Sensor, 8 Digital Inputs (Wet 24-48V), Powered by 12-48VDC | SM8-IN-48-1 | $650.00 |
- Add -A to the end of the part number for 125 VDC input power option and get your quote here.
Smart 8 Relay Output
Short description | Part number | Price | |
---|---|---|---|
Smart 8 Relay Output, 8 Normally Open/Closed Output Relays, 12-48VDC | SM8-OUT-1 | $650.00 |
- Add -A to the end of the part number for 125 VDC input power option and get your quote here.
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*Lead times are estimates and may vary. You will be contacted within 1 business day to go over the details of your order. If you require a specific date, let us know!
*Days = Business Days