Jackson, C.C.; Kotze, B.J.
(Interim : Interdisciplinary Journal, Vol 3, Issue 2: Central University of Technology, Free State, Bloemfontein, 2004)
Batteries powering RF transmitters have a generally short life span. Extending this life span, to and beyond 10 years while using a lightweight lithium coin cell, will result in an easy to use semi permanent installation. ...