Peel-and-stick version of Kamar Heatmount Detectors provide same great results; easy-to-spot, easy-to-understand and good for your bottom line. Triggered red heat detector helps identify standing heats. Application is convenient and easy to use, no tubed adhesive necessary. Inside only timing device activates detector after a 3 second mount. Gives a clear signal and stays on securely. Let her tell you when she's ready to breed.