MasterCentral network controller
- Up to 3 digital inputs
- Up to 2 relay outputs
- Heartbeat monitoring
- Local decision logic
- Sends and receives control events
Complete Wireless Control Network
Built to protect. Designed to scale.
FieldLink connects remote inputs and equipment into one wireless network for monitoring, alarms, control events, and coordinated shutdowns from the Master or any Node.
Input sources⚡●◇
Wireless Network
Up to 8 NodesEncrypted and reliableHeartbeat supervised
Node 1Up to 3 inputsUp to 2 outputs
MonitorAlarmControlShutdown
Node 2Up to 3 inputsUp to 2 outputs
MonitorAlarmControlShutdown
Node 3Up to 3 inputsUp to 2 outputs
MonitorAlarmControlShutdown
+ Up to 5 more NodesSupports up to 8 total Nodes
Optional Connectivity
Turn on cellular. Extend visibility.
Keep the core FieldLink network local, then add SMS alarms and cloud monitoring when your site needs them.
Cellular SMS Alarms
Enable cellular connectivity with the onboard DIP switch to send SMS notifications for alarms, shutdowns, Node offline events, and system restores.
DIP switch enabledFieldLink Cloud Dashboard
Optionally monitor all sites from one dashboard, including Master status, Node health, inputs, outputs, alarms, signal strength, and event history.
Multi-site visibility✓Core monitoring, control, and shutdown functions continue locally even if cellular or cloud service is unavailable.
How a shutdown works
1
Input detectedA configured input at the Master or any Node changes state.
→2
Master validatesAlarm delay and shutdown logic are applied.
→3
Command sentThe Master sends a command to assigned Nodes.
→4
Outputs activateNode relay outputs change state.
→5
Equipment stopsPumps stop and alarms or notifications are generated.
✓The shutdown network operates locally and does not depend on cellular service or the cloud.
Heartbeat MonitoringContinuous supervision of the Master and every Node.
Alarm & NotificationsOptional SMS alarms with cellular enabled, plus dashboard and SCADA notifications.
Latching & Fail-SafeLatch on alarm and optional fail-safe on communications loss.
Long-Range Reliability10+ mile capability with repeater support when required.
Scales With YouSupports up to 8 Nodes per wireless network.
Multi-Site Cloud DashboardOptionally monitor every FieldLink site from one centralized dashboard.
Traditional radios do not know they have failed
Know immediately when something goes wrong.
FieldLink continuously supervises every Node. When communication stops, the Master detects it, records the event, sends configured notifications, and can initiate a fail-safe response.
Traditional Shutdown Radio
Silent failure
The radios may stop communicating, but there is no heartbeat supervision to tell the operator.
Master RadioAppears normal
Remote RadioOffline or unpowered
!
Nobody knows
The failure may remain hidden until a shutdown is needed or an operator visits the site.
- No heartbeat supervision
- No communication-loss alarm
- Manual testing and site visits
- Failure discovered after the fact
FieldLink
Supervised network
The Master expects continuous heartbeats and reacts when a Node stops reporting.
Heartbeat activeMaster continuously verifies Node communication.
↓Node goes offlinePower loss, radio failure, or damaged equipment stops reporting.
↓Master detects lossThe missed heartbeat becomes a supervised network event.
↓Operator notifiedOptional SMS and cloud alerts identify the affected site and Node.
↓Fail-safe responseConfigured alarms, latching, or shutdown actions are applied.
Example response
From communication loss to operator awareness
0 secNode stops reporting
Communication or power is lost.
HeartbeatMaster identifies the missed check-in
The network event is created locally.
AlertSMS and dashboard update
Configured recipients receive the event.
ActionOptional fail-safe or shutdown
Assigned equipment moves to its configured safe state.
FieldLink does not wait for an operator to discover a silent radio failure.
Optional Cloud Monitoring
Your network never sleeps.
Every heartbeat. Every alarm. Every relay. Every site.
One dashboard gives operations, maintenance, and management instant visibility into every Master, every Node, every alarm, and every relay across every site.
✓Live heartbeat supervision✓Node online / offline status✓RSSI signal strength✓Relay output status✓Digital input status✓SMS alarm history✓Site and Node naming✓Configure alarm contacts✓Configure input actions✓Event history
FIELDLINK CLOUD
Live Field Network Overview
All Sites⌄Live
Live Field Network
Master, heartbeat, RSSI, relay, and input state
M
Master Controller
Central Production Site
Supervising all remote nodes
Network
8 / 8 Online
Cellular
Connected
Node 1
Pump Station A
-42 dBm
Relay
Ready
Pump
Running
Node 2
Pump Station B
-51 dBm
Relay
Ready
Pump
Running
Node 3
Pump Station C
-63 dBm
Relay
Ready
Pump
Running
Node 4
Remote Pump D
-58 dBm
Relay
Ready
Pump
Running
Node 5
Transfer Pump
-47 dBm
Relay
Ready
Pump
Running
Node 6
Injection Pump
-69 dBm
Relay
Ready
Pump
Running
Node 7
Water Station
-54 dBm
Relay
Ready
Pump
Running
Node 8
Remote Well
-61 dBm
Relay
Ready
Pump
Running
All Sites Overview
Monitor multiple master sites from one dashboard
Central Production Site
Master Online
8 / 8
Nodes Online
0
Active Alarms
-52 dBm
Avg RSSI
North Tank Battery
Master Online
6 / 8
Nodes Online
1
Active Alarms
-59 dBm
Avg RSSI
West Injection Site
Master Online
7 / 8
Nodes Online
0
Active Alarms
-61 dBm
Avg RSSI
LegendOnlineOfflineWarningRSSI StrengthHeartbeatRelay StatusPump StatusDigital Input
Network HealthAt-a-glance status for every site.
Master StatusConnection, cellular, Node count, and network state.
Node HealthLive RSSI, relay state, and input status for every Node.
ConfigurationRename sites, configure inputs, and update alarm contacts.
Flexible. Scalable. Always protecting.
1. Standalone NetworkLocal shutdown always protects. No cellular or cloud required.›
2. Enable CellularFlip the onboard DIP switch to enable cellular connectivity.›
3. SMS Alarm NotificationsCritical alarms, shutdowns, offline events, and restores are delivered instantly.›
4. Optional Cloud DashboardGain full visibility, configuration control, and event history.›
5. Multi-Site ManagementScale to unlimited sites and manage everything from one dashboard.
✓Core monitoring, control, and shutdown continue locally without cellular or cloud connectivity.
One hardware platform. Every role.
The ultimate simplicity.
Every FieldLink controller is universal. Configure it as a Master, Node, or Repeater in seconds using the onboard DIP switches.
Role SelectionDIP
1
2
3
4
5
6
7
8
Configured RoleMaster
Set the role, power the controller, and place it into service—no separate hardware model required.
Why universal hardware matters
One part number simplifies the entire lifecycle.
Installers no longer need separate Master, Node, and Repeater inventory. Any spare controller can replace any field unit.
One part number to stock
Simplifies purchasing, warehousing, and spare-parts planning.
Any unit can replace any unit
Carry one universal spare for every supported role.
Faster field replacement
Swap the controller, set the DIP role, and return to service.
Easy network expansion
Add Nodes or Repeater coverage without ordering a different model.
Lower inventory cost
Fewer unique devices and fewer dedicated spare parts.
Maximum uptime
Simpler service and faster replacement reduce operational downtime.
Traditional systems
MasterNodeRepeater
Three hardware types. Three part numbers. Three spare inventories.FieldLink
1Universal Controller
One controller configured for any role.1
WarehouseUniversal spare in stock
→2
InstallReplace any controller
→3
Set DIPSelect Master, Node, or Repeater
→4
OnlineReturn the site to service
Built for critical applications
Built for every remote site.
Whether you are protecting an oil lease, monitoring a water system, controlling irrigation, or supervising industrial equipment, FieldLink uses the same hardware platform and the same network logic.
Oil & Gas
Protect production sites, tank batteries, pump stations, injection systems, and remote lease equipment.
✓Tank High Level✓Pump Shutdown✓Production Monitoring
Water & Wastewater
Monitor wells, tanks, treatment facilities, lift stations, booster pumps, and remote water assets.
✓Lift Stations✓Water Tanks✓Booster Pumps
Agriculture
Connect irrigation pumps, storage tanks, pivots, and distributed field equipment across large properties.
✓Irrigation✓Storage Tanks✓Remote Pumps
Mining & Industrial
Supervise remote machinery, process equipment, conveyors, dewatering systems, and critical utilities.
✓Conveyors✓Dewatering✓Process Pumps
Wireless Shutdown. Continuous Protection.