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NIGHTWATCH® offers peace-of-mind protection for < $1/day* so you can sleep easier and intervene sooner.

It's groundbreaking when an invention comes along with the potential to impact survival and quality of life outcomes. Yet, that is exactly what NIGHTWATCH® is poised to do. After 4.5 years in development, the life-saving device has received regulatory clearance and available to horses in the United States and Canada.


NIGHTWATCH® smart halters and safety collars are designed to offer peace of mind. They are not intended to diagnose, treat, mitigate, cure, or prevent any disease or condition.


NIGHTWATCH® acquires and analyzes real-time data on your horse's vital signs and behaviors, continuously looking for signs of danger/distress such as colic, stall casting, and foaling.


NIGHTWATCH® uses novel radio frequency technology (ie, ultra-wideband impulse radar [UWB-IR]) to monitor your horse’s heart rate and respiratory rate, the two most important vital signs that correlate with pain and acute distress in horses. UWB-IR technology works much like sonar whereby the sensor measures the physical displacement (ie, constriction and dilation) of the microvasculature around your horse’s poll (ie, area behind their ears) for heart rate, while also assessing physical changes in the soft tissue of their upper respiratory region for respiratory rate.


NIGHTWATCH® uses a variety of sensors, including accelerometers, gyroscopes, magnetometers, and altimeters to continuously assess your horse’s activity, motion, and posture. More specifically, NIGHTWATCH® identifies and flags (for evaluation) first-time novel events that may be indicative of distress along with known movements that likely correlate with distress such as pawing, kicking, flank watching, repeated rising/falling, extended periods of recumbency, violent rolling with/without thrashing, etc

  Historical data shown via the NIGHTWATCH® Web App on an iPhone.

Historical data shown via the NIGHTWATCH® Web App on an iPhone.

  NIGHTWATCH® smart halter with embedded electronics (10.4 oz) shown.

NIGHTWATCH® smart halter with embedded electronics (10.4 oz) shown.


NIGHTWATCH® is an early warning system that automatically alerts you at the first signs of danger/distress in your horse (via text, phone call, and email). After setting-up your account preferences, NIGHTWATCH® will alert you and up to 4 additional caretakers when a predefined threshold of danger/distress is breached. Thresholds can simply be your horse's EDI® score or you can customize upper and lower limits on any of the other 5 metrics, including their heart rate, respiratory rate, number of times they roll or get up/down, and time spent lying down (ie, recumbent).

Alert notifications can be sent simultaneously as a broadcast or in a cascading fashion until the alert is acknowledged. An LED light on the ID plate of each NIGHTWATCH® halter/collar further offers a visual indicator of your horse’s state. Just look for the green light for reassurance your horse is happy and within their normal/non-distress state.



NIGHTWATCH® provides 24/7 access to actionable insight and historical information on your horse from the convenience of a smartphone, tablet, and computer. Simply log into your account and view real-time and historical information on your horse's EDI® score, their vital signs and behaviors, GPS location, history of issued alerts, and more.


Your horse’s EDI® score is an objective measure of their relative distress and general well-being, and derived using a fuzzy inference system with multiple parameters, including biometric and behavioral inputs, environmental conditions, pre-existing risk factors, and more.

  • Biometric data: Vital signs
  • Behavioral inputs: Activity, motion, posture
  • Environmental conditions: Location, time of day, etc.
  • Pre-existing risk factors: Medical history, habits, etc.

The Equine Distress Index® (EDI®) is a proprietary 10-point scale, offered exclusively by NIGHTWATCH®, used to quantify relative distress in your horse at any given point in time. The lower your horse’s EDI® score, the happier and healthier they are. Equine Distress Index® and EDI® are registered trademarks of Protequus LLC.

* Cost of an annual monitoring contract/license agreement (after initial purchase).

Each NIGHTWATCH® smart device requires an annual monitoring contract/license agreement, which can be paid in 12 monthly installments of $29.99 or once annually for $329.99. Each contract carries an early termination fee of $199.99 and allows for real-time analysis of data; data transmission across cellular networks (up to 1 GB/month); automatic alert notifications for up to 5 people via text, phone call, and email; personalized distress algorithms; and 24/7 on-demand access to insight and historical information on your horse from any smartphone, tablet, or computer. Periodic access to WiFi is REQUIRED for on-going firmware updates for bug fixes, security fixes, performance improvements, and new features.