Qolsys equipment

Change the batteries in your Qolsys equipment

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4-button key fob


  1. Make sure the system is disarmed. To avoid sending any accidental panic signals, put the key fob down on a flat surface
  2. Remove the backside screw and open the cover using a screwdriver
  3. Push out the original battery from its holder
  4. Insert the new CR2032 with the polarity “+” on top
  5. Test the unit by momentarily pressing on the Transmit buttons - the LED should light up
  6. Replace the cover and attach it with the screw and screwdriver
  7. Dispose of the used battery by contacting your local battery recycling programs

Door & window security contact (PG9975)


  1. Make sure the system is disarmed and remove the device from its original position
  2. Insert a 4 mm flat screwdriver into the slot of the plastic cover, and flex the slot to open that side of the plastic cover
  3. Insert the screwdriver into the slot on the other side of the plastic cover and repeat the procedure, and then remove the cover
  4. Insert a new CR2032 lithium coin battery at an angle while observing battery polarity and then press down on the battery
  5. Replace the cover and put the device back to its original position
  6. After restoring a low battery trouble, the system may take up to 5 minutes to clear the trouble signal
  7. Dispose of the used battery by contacting your local battery recycling programs

Door & window security contact (PG9303)


  1. Make sure the system is disarmed
  2. Remove the cover of the sensor using a coin
  3. Wedge a flat head screwdriver under the battery
  4. Twist the screwdriver using the base as a lever to remove the battery
  5. Insert a new CR2450 lithium coin battery at an angle with the positive (+) side facing up. Press down on the battery until it fits into place
  6. Replace the cover and put the device back to its original position
  7. After restoring a low battery trouble, the system may take up to 5 minutes to clear the trouble signal
  8. Dispose of the used battery by contacting your local battery recycling programs

Glass-break detector


  1. Make sure the system is disarmed and remove the device from its original position
  2. Press in the snap and separate the cover from the base
  3. Remove the former battery replace with a new CR123A battery into the battery clips. Make sure to pay close attention to the polarity when installing the new battery
  4. Replace the cover and put the device back to its original position
  5. Dispose of the used battery by contacting your local battery recycling programs

Wireless flood detector


  1. Make sure the system is disarmed and remove the device from its original position
  2. Insert a flat-edged screwdriver into the slot and push upward to remove the cover
  3. Remove the screw and separate the cover from the base
  4. Remove the former battery replace with new CR123A battery in the device. Make sure to pay close attention to the polarity when installing the new battery
  5. Replace the cover and put the device back to its original position
  6. Dispose of the used battery by contacting your local battery recycling programs

Wireless motion detector


  1. Make sure the system is disarmed and remove the device from its original position
  2. Use a Phillips screwdriver to loosen the screw at the bottom of the motion detector by turning counter clockwise
  3. Press the bottom of the cover and separate the cover from the base of the device
  4. Remove the former battery replace with new CR123A battery in the device
  5. Replace the cover and put the device back to its original position
  6. Dispose of the used battery by contacting your local battery recycling programs

Wireless smoke & heat alarm


  1. Make sure the system is disarmed when replacing the batteries for your device
  2. Remove the detector from it’s mounting base by twisting the detector counterclockwise
  3. Remove the original batteries
  4. To ensure proper power-down sequence, wait a minimum of 20 seconds before installing the new batteries
  5. Install 3 new AAA batteries in the battery compartment. Pay attention to the polarity diagram inside the compartment. If the batteries are incorrectly inserted, please remove gently with a non-conductive tool and correctly reinsert
  6. Reinstall the detector onto the mounting base by turning the detector clockwise until the mating marks align
  7. After the power-up sequence, the green LED should blink about once every 12 seconds to indicate normal operation. If the batteries are not installed correctly, the detector will not operate and the device will not power up
  8. Dispose of the used battery by contacting your local battery recycling programs

Carbon monoxide alarm


  1. Make sure the system is disarmed when replacing the batteries for your device
  2. Remove the detector from it’s mounting base by twisting the detector counterclockwise
  3. Remove the original batteries
  4. To ensure proper power-down sequence, wait a minimum of 20 seconds before installing the new batteries
  5. Install a new 3V CR123A lithium battery in the battery compartment. Pay attention to the polarity diagram inside the compartment. If the batteries are incorrectly inserted, please remove gently with a non-conductive tool and correctly reinsert
  6. Reinstall the detector onto the mounting base by turning the detector clockwise
  7. After the power-up sequence, the green LED should blink about once every 12 seconds to indicate normal operation. If the batteries are not installed correctly, the detector will not operate and the device will not power up
  8. Dispose of the used battery by contacting your local battery recycling programs

Control panel


  1. Before you begin, make sure you disarm and power down the panel. Go to Advanced settings and enter your master code. Select Power down
  2. Once the panel is powered down, separate the backplate by pressing the two knobs at the bottom of the panel. Warning: The panel is shut very tightly and this step will require additional force
  3. Once the backplate is removed, unplug the 4 pin battery connector from the board
  4. Pull and stretch the blue tab from under the battery. Make sure to avoid pulling the tab at an angle or outwards perpendicular to the battery (towards you) - the tab should be pulled in a straight line. This will peel away the tape holding the battery in place. You should now be able to remove the battery from the panel with ease
  5. Install the new battery by removing the protective film from the adhesive tape on the back of the battery and seat the battery into the bottom left hand plastic corner. Plug the battery connector back into the circuit board
  6. Once the new battery is securely placed into its spot, secure the panel back with its backplate by aligning the TOP of the brackets with the backplate. Make sure the antenna is sticking out of the panel to support best signal frequency
  7. Ensure the top part of the backplate is shut tightly before proceeding with the bottom. Once complete, click on the sides of the panel to ensure the panel is back in its place
  8. After you finish, you may turn the panel back on by pressing the power button on the side of the panel. Let the system power up completely. Note: You may get a low panel battery notification. This is due to the new battery charging and will need a couple of hours to completely recharge

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