Flood, high and low temp, freeze – for furnace failure – under 7 degrees celsius, overheat – for furnace runaway or air conditioning failure – Over 37 Degrees F, 3 unique wireless IDs or loops: one for each function, cover and wall tamper, 3-5x more range than competing “puck” style sensors, 8-10 year battery life on CR2032 battery, IP67 waterproof rating, 2.43 x 2.48 x 1.17 inches.