Tru-Test indicators are the fastest, accurate, most versatile and durable indicators in the world. All indicators feature Superdamp™ technology, unique to Tru-Test, to record accurate weights quickly, even with the liveliest animals. Within 3-6 seconds our weigh scales lock on a weight, and a bright stable light lets you know when it's ready to be recorded. An auto zero function also ensures any accumulation of animal dirt or manure is zeroed after the animal leaves the scale. Tru-Test indicators are compatible with all Tru-Test load bars. All indicators have internal battery, mounting brackets and a 2 year warranty and are IP67 environmental rated as well as 100% water and dust proof.