The SE2-304 has 3 main features, the lanyard switch, man down, and transmitter supervision. To enable these features:
1) Remove the belt clip.
2) Remove the retaining screw on the back of the transmitter.
3) Pry the lower part of the front cover away from the rest of the enclosure.
With the cover removed all three rows of pins will be visible. With the alarm switch in the Up position.
-To enable the lanyard alarm feature place the jumper on the top row of pins, covering both pins.
-To enable the man-down feature cover the middle row of pins with the jumper.
-To enable supervision place a jumper over the bottom row of pins.