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 V2.
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 simply 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.
Sensor nodes are in stock for the 2025 season. Most orders ship in 1-3 days.
A SapSpy Sensor Node communicates to the SapSpy Sensor Hub (Sold Separately) allowing you to measure vacuum at different locations in your sugarbush.
A sensor node can be one of the following configurations:
1) Single Vacuum Sensor with temperature sensor
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). 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 (currently up to 40). 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.
Sensor Hub - Cellular
Regular price
$1,145.00
Sale price
$1,065.00
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 $50/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
A SapSpy Metering Node keeps track of the total sap collected in a sugarbush at each electric releaser. The metering node tracks the total gallons or liters pumped at every 5 minute interval. Within the Sap Spy web app, we then calculate and visualize the following:
Total gallons for the season
Total gallons/tap for the season
Gallons/reading
Gallons/Hour
Gallons/Day
Gallons/Tap/Day
This data helps you track your total production for the season helping you optimize your operation. Data is maintained year over year for ongoing seasonal comparisons.
The following meters have been tested and work well with a Sap Spy metering node (sold separately). The prices listed here are competitive with purchasing direct from EKM or GPI directly as well as from other resellers. Purchasing from Sap Spy includes electrical connectors making it easy to connect to directly to the Sap Spy metering node.
If you already have a GPI flowmeter and would like to add the pulse counting functionality to it without swapping out the entire meter. Please reach out as that can be sold separately at a significant discount over purchasing directly from GPI.
Metering Node (Pulse Counter)
Regular price
Sale price
$400.00
A SapSpy Metering Node keeps track of the total sap collected in a sugarbush at each electric releaser. The metering node tracks the total gallons or liters pumped at every 5 minute interval. Within the Sap Spy web app, we then calculate and visualize the following:
Total gallons for the season
Total gallons/tap for the season
Gallons/reading
Gallons/Hour
Gallons/Day
Gallons/Tap/Day
This data helps you track your total production for the season helping you optimize your operation. Data is maintained year over year for ongoing seasonal comparisons.
Metering 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.
A Sap Spy metering node is simply a pulse counter. It is universal and operates with any water meter that produces a pulse output. If you already have a water meter with pulse output capability, there is no need to replace it. Simply use this node directly.
If you don't already have a metering node, one can be purchased separately.
Pulse counting can also be used to count the total number of dump cycles from a mechanical releaser allowing you to track total volume of sap processed and average time taken between dump cycles. This requires a magnetic reed switch also sold separately.
Tank Level Sensor
Regular price
$240.00
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.
