Three zone transmitter with three separate contact loops. Primary loop supports normally open and normally closed applications and fast loop response time. The two auxiliary loops support conventional normally closed contact applications. The 5800 Series of door and window transmitters provide the most reliable, convenient and cost effective solutions for security protection. These devices are powerful and versatile enough to help solve even the toughest, most labor intensive installations. With a demonstrated outdoor range of over a mile, the 5800 Series has the best performance of any transmitters available today.