Battery Replacement 2: Black Top NEMA Transmitter

About this Article

This article is about replacing the batteries in a Black Top NEMA ransmitter:

For instructions on replacing the batteries in other sensors, refer to those specific instructions.

PLEASE READ ALL INSTRUCTIONS BEFORE STARTING

Replacing the Batteries

You have paused the sensor alerts (see more >), and are now ready to begin replacing the batteries:

Instructions

1. Remove the sensor from the location where it is mounted, being careful not to damage the sensor.
2. Allow the sensor to adjust to room temperature. This could take up to 30 minutes for a sensor that has been in a freezer. Working on a sensor that is colder than room temperature could cause moisture to build up inside the sensor when you open it to replace the batteries. Moisture can damage the inside of the sensor.
3. Working over a surface such as a desk or table, remove the four (4) screws that hold down the clear plastic cover.
4. Flip the toggle (see figure below) switch from ON to OFF. For reference you would be moving the switch from position right to left when the antenna is at the 12 o’clock position. The switch towards the outside edge is “off”:

   

5. Remove the green board.
   • It is very important that you do this with the utmost caution because there is a glass piece at the top of the board near the antenna that is susceptible to being damaged if the board is not removed with care and can cause the sensor to no longer function correctly, requiring a new sensor to be purchased (See Photo).

     

     If possible, use the white tabs and pull straight up. If the board is in tight, use a flat head screw driver to carefully and gently lift the bottom end of the board up.

6. Once you have lifted the board free, remove all four (4 batteries, making note of which way postive faces (i.e., + to +), as all batteries face the same direction.
7. Put the new batteries in the sensor, making sure they are facing in the correct direction (i.e., + to +).
8. Place the green board back into plastic case.
9. Verify that the antenna connector is connected to the board, taking particular note of the placement of the white strap and connector:

   

   Also, the antenna cable runs down the side of the case through the cut-out on the board.

   Here are some examples of what doesn't work, where:

   • The antenna is not connected.
   • The white strap is missing or in the wrong place.
   • The antenna cable doesn't pass through the notch in the board or doesn't run down the side of the case.

          

10. Turn the sensor on You should see the little red light flash one time.
11. Screw the cover back on. Make sure you do not over torque the screws.

Now, we will verify that the sensor is working [GO>]