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Sap Spy Gateway – LoRaWAN® Sensor Hub

The Sap Spy Gateway is a next-generation LoRaWAN® gateway designed for long-range, low-power communication between your Sap Spy sensor nodes and the cloud. Built for sugarbush monitoring, it provides reliable data transmission across vast distances while maximizing sensor battery life.

Long-Range Coverage

With an expected range of ½ mile to well over 1 mile between a gateway and a node (terrain dependent), the Sap Spy Gateway makes it easy to cover large properties. Larger producers can install a gateway in different areas of the property for complete property coverage. Any Sap Spy node can connect to any gateway automatically — no user configuration required. This provides near infinite scalability throughout your larger sugarbush.  

Simple Connectivity Options

The gateway connects to the internet using your choice of:

• Wi-Fi

• Ethernet

• Cellular (all cellular setup and management handled by Sap Spy)

Power Options

The Sap Spy Gateway requires either a standard 110V power source or Power over Ethernet (PoE). For remote or off-grid locations, an external solar panel and battery pack option is available, providing continuous power for uninterrupted monitoring all season long. 

Your purchase includes all necessary mounting brackets, antennas and cables. 

Subscription

Each gateway requires an annual connectivity subscription of $250 per gateway per season, ensuring seamless cloud integration, monitoring, and support.

Beginning Oct 2025, all sensor nodes that are capable of talking to either a Sap Spy Gateway V2 or our popular Sap Spy Sensor Hub. Nodes shipped prior to Oct 2025, will require a software update. Software updates are easy/straightforward and typically done by the customer without having to ship nodes back to Sap Spy. Contact us at info@SapSpy.com

The general recommendation:

• Less than 2,500 taps: Sap Spy Sensor Hub + Sensor Nodes
  
• Greater than 2,500 Taps: Sensor Gateway V2 provides a simple setup and infinite scalability. 

Includes everything you need to begin monitoring your sugarbush today including: 6' USB Cable, USB power adapter, Vacuum hook-up connection to releasers, Submersible tank level sensor with 10 ft cable. 

Device includes SIM Card and ships pre-activated ready to connect. Requires $75/season subscription fee paid to SapSpy. The first season is included with your purchase. Future seasons will be invoiced in January. 

Measure: Tank Level (0-100%) Vacuum Level (0-29.9 inHg) Temperature (degrees F)

Alert: Send text alert based on alert settings you configure. Sends alerts up to 3 people. 

Plot history: Plot the history of the vacuum level, tank level and temperature for durations between 1 hr and 14 days. Known how cold it was last night as well as how the sap is running during the day. Ensure your vacuum is always at peak performance. 

No power in the woods? No Problem: Device can last 2-4 weeks on a single charge. Available Options include: Solar Panel or alligator clips for 6-12 Volt battery. 

No WiFi in the woods? No Problem: Device connects over the cellular network with near full Cellular coverage throughout US and most of Canada

Includes everything you need to begin monitoring your sugarbush today including: 6' USB Cable, USB power adapter, Vacuum hook-up connection to releasers, submersible tank level sensor with 10 ft cable + 10' extension cable. 

Requires $50/season subscription fee paid to Sap Spy. The first season is included with your purchase. Future seasons will be invoiced in January. 

Measure: Tank Level (0-100%) Vacuum Level (0-29.9 inHg) Temperature (degrees F)

Alert: Send text alert based on alert settings you configure. Sends alerts up to 3 people. 

Plot history: Plot the history of the vacuum level, tank level and temperature for durations between 1 hr and 14 days. Known how cold it was last night as well as how the sap is running during the day. Ensure your vacuum is always at peak performance. 

Limited Cell Service or Already have WiFi? No Problem: The WiFi sensor hub connects over your existing WiFi network for connectivity. 

A SapSpy Sensor Node communicates to the SapSpy Sensor Hub (Sold Separately) OR Sap Spy Gateway allowing you to measure vacuum at different locations in your sugarbush.

This represents the remaining stock of our 1st generation sensor node. The next generation node is referred to as a "universal node" where you order the universal node in any quantity and then order the physical sensors needed for it. A universal node can be used as a 1, 2 or 3 port sensor where you choose the quantity and type of sensor that gets plugged into it. This makes it both easier for us to build 1 universal device rather than 6 variations and it makes it a bit easier for you to know what to order and/or as your operation expands you can simply add sensors. https://sapspy.com/collections/all-products/products/universal-sensor-node

A first generation sensor node can be one of the following configurations: 

1) Single Vacuum Sensor with temperature sensor (SOLD OUT - Replaced by Universal Node)

2) Dual vacuum sensor with temperature sensor

3) Single Vacuum Sensor with Ultrasonic Tank level sensor and temperature sensor (used for a tank and releaser)

4) Single Ultrasonic tank level sensor and temperature sensor (Typically used where an electric releaser pumps to a remote tank where vacuum monitoring is not needed). 

In order for SapSpy Sensor Nodes to communicated to the SapSpy Sensor Hub, the Sensor Hub must include an add-on radio option for +$100. 

Sap Spy nodes are now capable of Spy Mesh. Spy Mesh allows nodes to repeat a signal in order to significantly increase the distance between end of line vacuum sensors and the sensor hub (Cellular Gateway). 

A single Sap Spy sensor hub can service many sensor nodes (currently up to 50). The recommended maximum number of hops between a sensor hub and sensor node is 2. The expected distance between two sensors nodes is estimated at ~1500' - 2500' through a typical sugarbush. Line of sight, sensor nodes can reach 3 miles+ between two nodes. It is recommended to use a dedicated Sensor Hub per sugarbush location and use that particular Sensor Hub to service all sensor nodes in the local sugarbush.

A Sap Spy gateway (or multiple gateways) can service hundreds of sensor nodes allowing the system to scale to the largest producers in the industry. 

Sap Spy is proud to introduce the Universal 3 Port Sensor Node

This next generation sensor node provides 3 generic ports allowing you to connect 1, 2 or 3 sensors externally to the device. As of Oct 2025 the list of compatible sensors include

• Vacuum Sensors
• Tank Level Sensors
• Pulse Counting Modules (Water meters) 
• Pressure Sensors (coming soon!) 

This style of sensor node can communicate to either existing sensor hubs or to the new Sap Spy Gateway.

Common configurations include:

• 1 Port Vacuum Sensor: Monitor the end of 1 mainline or a releaser. 
• 2 Port Vacuum Sensor: Monitor the end of 2 mainlines
• 3 Port Vacuum Sensor: Monitor the end of 3 mainlines
• 1 Vacuum + 1 tank level: Monitor vacuum and tank level at a releaser location. 
• 1 Vacuum + 1 Tank + 1 Pulse counter: Monitor vacuum, tank level and sap flow at a pump house. 

Minimal configuration needed, the sensor node recognizes what sensor type is plugged in. All you do is give each port a name in the Sap Spy web app for ultimate flexibility. 

Solar panel provides continuous operation from season to season. 

This vacuum sensor provides a digital signal to the multi-port common sensor node. This allows you to connect 1, 2 or 3 sensors up to a single sensor node to provide a more cost effective monitoring solution for your sugarbush. 

This vacuum sensor is compatible only with the multi-port common sensor nodes. It is not compatible with other sensor nodes or with sensor hubs. 

Measure: Vacuum Level (0-29.9 inHg)

This sensor provides a digital signal to the multi-port common sensor node. 

This sensor is compatible only with the multi-port universal sensor node. It is not compatible with other sensor nodes or with sensor hubs. 

Two options are available:

0 to 725 PSI: Commonly used to measure pressure of your RO to ensure it's running at a good range. Can also be used for transfer pumps to detect when a line is frozen and too much pressure is building

-14.5 to 14.5 PSI: Used as a tank level sensor for large silo style tanks. Can measure up to 33' tall. Is also used to measure the level of a vacuum style tank when combined with a vacuum sensor at the top of the tank. 

This is an additional tank level sensor compatible with Sensor Hubs, Sensor Nodes and LED the sight glass. By default, each of these devices already comes with a tank level sensor. This item can be used to upgrade to an alternative style or as an add-on if you originally purchased without the tank level sensor. 

Measure: Tank Level (0-100%) Vacuum Level (0-29.9 inHg) Temperature (degrees F)

We generally recommend the submersible style level sensor in all scenarios. The only disadvantage to the submersible is it is one more think to wipe down/clean when you clean your sap tanks. 

The submersible sensor cable length is 15' and includes an extra 15' extension: 30' total. 

The ultrasonic sensor cable length is 15' total and by default does not include an extension. 

The only scenario you'd want to use the ultrasonic sensor is for open top tanks using an electric releaser. 

The LED virtual sight glass is commonly used in the sugarhouse to visualize the level of liquid in the head tank of an evaporator. A submersible liquid level sensor or external pressure sensor is used to precisely measure detect the level of liquid in the tank down to 0.25". Based on the liquid level, the LED virtual sight glass controller, will illuminate multiple LEDs on a ~3' long (60 LED light strip. This allows you to always know the level of liquid in any tank. 

- The LED strip will turn Blue/Green when the level is at the desired zone

- The LED strip will turn Blue/Red when the level is in a undesirable zone (close to empty, close to full). 

A user can scale the sensor reading to accommodate smaller and larger tanks and can also set their specific threshold on when to turn the LED strip colors based on the level of the tank. 

The LED light strip can be mounted to a wall in plane sight of your evaporator or common work area. The tank itself can be up to 25' away. 

Sensor Options:

Stainless Steel Submersible - Digital: Provides simple install. Simply place the sensor in the bottom of your tank and it measures tank height based on pressure. Can measure up to 10' tall tanks. 

1/4" NPT External Pressure Sensor - Digital: Typically used for larger sap tanks such as Silo's or other large vessels. Mount the pressure sensor near the bottom of the tank using a 1/4" NPT fitting. This sensor detects the height of the liquid based on the pressure. It can measure the height of a liquid in up to 33' tall silos. 

Click to View Setup Instructions

A SapSpy Control Node communicates to the SapSpy Sensor Hub (Sold Separately) allowing you to control a relay module, measure vacuum, tank level and temperature in different areas of your sugarbush. A control node is typically used at a secondary collection station or another location in the sugarbush where you need to turn a motor on/off, open/close a solenoid valve, or any number of applications. 

Control nodes will require 5V power via a USB cable. This keeps them "awake" 24/7 always listening for commands. For the 2025 season, control nodes should be within direct communication of a sensor hub. 

Control Nodes will be a limited release for the 2025 season. Customers who purchase a limited release version will have an opportunity for a free upgrade if hardware changes are required.

In order for SapSpy Sensor Nodes to communicated to the SapSpy Sensor Hub, the Sensor Hub must include an add-on radio option for +$100. 

Sap Spy nodes are now capable of Spy Mesh. Spy Mesh allows nodes to repeat a signal in order to significantly increase the distance between end of line vacuum sensors and the sensor hub (Cellular Gateway). Videos and additional instructional content will be updated in Q4 of 2022 discussing this new and exciting functionality. 

A single sensor hub can service many sensor nodes. The recommended maximum number of hops between a sensor hub and sensor node is 4. The expected distance between two sensors nodes is estimated at ~1500' - 2500' through a typical sugarbush. Line of sight, sensor nodes can reach 3 miles+ between two nodes. It is recommended to use a dedicated Sensor Hub per sugarbush location and use that particular Sensor Hub to service all sensor nodes in the local sugarbush.

This dual relay module works with a Sap Spy sensor hub or the Sap Spy control node. The module consists of two relays where each relay is independently controlled. Each relay is a single pole double throw (SPDT). This means it has a common terminal, normally open terminal and normally closed terminal.

Max load is 10 amps up to 240VAC. If you are starting/stopping larger motors requiring more amps, then we recommend using a motor starter. 

This power strip module works with a Sap Spy sensor hub or the Sap Spy control node. The module consists of 4 110V outlets. 

• Always On
• Normally On
• Normally Off
• Normally Off

The normally on and normally off outlets will all change state together with 1 signal from the Sap Spy sensor hub or control node. This means anything plugged into the Normally ON port will turn off and anything plugged into the Normally Off port will turn on. This is commonly used to turn a guzzler style pump on and a heat lamp off and vice versa. 

Max load is 10 amps at 110VAC. 

This integrated motor starter with overload is integrated directly with Sap Spy. This allows you to remotely turn on/off a 220V single phase motor from your phone, tablet, or PC all through the Sap Spy sugarbush monitoring system. This is commonly used to turn vacuum pumps or a remote pump to empty a tank. This is currently available in 1.5 HP, 3 HP, or 5 HP. 

As of 19th of Feb 2025 we are temporarily out of stock. We expect to be back in stock with near immediate shipment again by 2/28/2025.

Sap Spy is now offering an electronically controlled, self resetting valve. This device can prevent the moisture trap or releaser from tripping in the morning thaw when the sap flood gates open. This saves you time and further protects your vacuum pump investment.

The solenoid valve can be installed on the vacuum line just prior to your releaser. When the releaser is not keeping up and continues to fill with sap, the valve actuates cutting off vacuum and preventing any sap from entering the vacuum line of the releaser. Once the releaser pump catches up and the probes clear, after a programmable 1-10 second delay,  the valve opens again restoring vacuum to the releaser.  

Stainless probes are 1/4" NPT. A 1/4" NPT tap and 7/16" drill bit is required for installation. (Not included)  

Solenoid valve is 2" NPT and is Normally Open. 2 valves with 1 control relay option can be used in larger sugaring operations. In this case, both valves will actuate together and can be plumbed in parallel for 2X the flow. 

Can be operated in 1 probe (common, max) or 2 probe mode (common, max, min.). The relay module can be configured for either mode. We recommend using the 1 probe mode with a 10 second off delay for most scenarios. 

Operates on 110VAC. 
Custom configurations are also available upon request. 

Click here to view detailed installation instructions

This video is curtesy of Dan Bolton from Crestview Maple Farm. 

Sap Spy is now offering an electronically controlled motor starter available in 1 HP, 3 HP or 5 HP 220VAC configurations. Other configurations available upon request. This device is used to start larger motors when emptying tanks manually (start/stop push button) or automatically (based on electronic probes indicating a max and min level. 

Operates on 220VAC. 
Custom configurations are also available upon request. 

This two-toned cap features breathable mesh with contrast stitching. Front side is black with Sap Spy embroidered into it and the back side is a breathable white mesh. Featuring Mesh Flex Fit.

• 55% polyester, 43% cotton, 2% spandex
• 6-panel structured, low-profile hat
• Sewn eyelets
• Size 6 7/8 – 7 1/2 (L/XL)

Care instructions: Spot-clean only. To preserve the cap shape and your design, we don’t recommend machine washing.

Keep the cold at bay with the Sap Spy Fleece-Lined Knit Cap.

• 100% acrylic, 100% polyester fleece (lining)
• One size fits all
• Hand wash & lay flat to dry

• Stainless steel (contoured base), clear ABS plastic Snap-On
• 7.68" H x 3.39" D
• 22 oz.
• Vacuum-insulated: Keeps drinks hot or cold for up to 6 hours
• Spill-resistant sip-top lid
• Hand wash only