This instrument determines the most fertile moment for breeding in animals. As a result, it avoids the necessity of multiple breedings, saves valuable time and reduces expensive veterinary bills. This is a small and fully portable device, powered by a 9V battery.

The Estrous Detector monitors changes in electrical resistance of the vaginal mucus. Measurements are taken simply by properly inserting the probe in the vagina and taking the reading. No prior technical knowledge on the part of the operator is required. The big, easy-to-grip handle ensures that the instrument is not easily kicked out of the user's hand and the easy-to-read display makes reading the results more convenient.

One or two daily readings over several successive days are recommended for fail-safe detection of estrous.