I have been thoroughly impressed with the quality and longevity of Holohil’s transmitters! The transmitters are well-designed and very durable, even despite blazing heat, below freezing temperatures, and degradation from acidic swamp habitats. The battery life has been reliable and often far exceeded the estimated life. Several transmitters estimated to last 6 months were still signalling 12 months later! The customer service has been exceptional, from planning an order to transmitter refurbishment. Holohil’s products and team are essential part of my research, I would highly recommend.

Transmitters Exceed Expectations
Ellery Ruther
University of Illinois