Question about Plantronics M100 Bluetooth Headset

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M100 bluetooth headset too low suddenly

I've had this headset for two years and have never had a problem with it. Recently one of my chargers would not charge it completely and it would blink red after a certain point. It chargers normally on other chargers. Recently when I turn it on the volume is extremely low. When I make it louder on both the phone or the headset it maxes the volume but sounds like the lowest volume normally. The lowest can no longer even be heard. I know this is an older model now but any suggestions or is it time for a new one?

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You can get a voltmeter at any auto parts store that will test the output from your charger , and will also check the resistance out to the phones .. if the charger is charging to the stated voltage , and the batteries are not charged , they need to be replaced , their only good for 2--4 years , the chemicals , after time , lose ions in the charge/ discharge process. good luck..

Posted on Jan 04, 2014

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Posted on Jan 02, 2017

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SOURCE: charging plantronics 520/521

The red light will stay ON while charging and will go OFF when charged. Charging does not take long. Since you have no manual, you turn the headset on by pressing down or toward your head and holding the button down. If it's in your ear already, you'll hear a four-note upward pitch sequence to indicate it's powered on. If it's out of your ear, you'll see a red light, followed by a blue flashing light.

Set your phone into Bluetooth mode and make sure in the menus that Bluetooth is "discoverable" or some such lingo to search for the headset. The pairing code for this headset is 0000 (zeros not O's), so when you set your phone up to pair with the headset and the phone wants a pairing code, enter 0000. After the pairing is completed and Bluetooth is activated on your phone, you should hear a high pitched single tone to indicate the headset is in range and communicating with your phone. If you separate from your phone over about 30 feet or if communication is interrupted with your phone for some reason, there will be a lower pitch single tone, indicating loss of communication. After pairing, you should not have to go through the code sequences or setup again unless your phone is completely reset. You should be able to set your phone to Bluetooth, turn your headset on and hear the four-note sequence, followed by a single high note.

Push the switch up or away from your mouth to step the volume up. Likewise, push the switch down or toward your mouth to lower the volume. I've never turned it down, it's always a little low in volume to me even at max.

Push down or toward your head BRIEFLY to answer or hang up the call. Depending on your phone, you can also activate dialing or voice command by using this same brief push. There is a brief delay between pushing the button and being able to talk on most phones, so you might listen for a volume or noise change before talking.

To turn the headset off, push down or toward your head and hold the button down. You will hear a four-note downward pitch sequence to indicate power-down. If you're looking at the headset, you will see a steady red LED, then it will go off. By the way, a flashing red LED indicates need to recharge. A flashing blue LED indicates the unit is operating correctly.

Remember, battery consumption on your phone is greater with Bluetooth turned on, whether you use the headset or not. Bluetooth units constantly stay in touch with their partners, much like your phone stays in touch with the cell towers. So watch your phone's battery indicator a little more closely until you get used to your talk patterns and general use. Depending on your situation, your phone may not use much more battery than before.

Standby (inactive but ON) time on the headset is very good, and battery shelf life (power OFF) has been good also. These headsets are extremely useful in a car or if you are busy with your hands during calls. Just remember to use your head (pardon the pun) and not take or make calls while doing something dangerous. You wouldn't do that with your corded home phone, would you? The vote is still out, but they do tend to look a little nerdy when worn constantly in public. I hope you get as much benefit from your Bluetooth headset as I have from mine. I thought they were completely Nerdsville before, but I'm a convert now. Good luck.

Mark in Oklahoma

Posted on Aug 28, 2008

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SOURCE: forgot how to sync my

Hold the up volume and the talk button (the one on the side of the ear piece) down until the status light flashes red then blue.  This places the headsead into pairing mode.

Posted on Jan 06, 2009

keekus
  • 83 Answers

SOURCE: outside caller hears themselves in an echo

Echo is usually caused by the transmit (speak) level on the unit being set too high.

1. First, try lowering the volume of the telephone. If you still hear an echo, adjust the volume of the headset itself.

2. The master transmit controls of the headset are the ABCD switch settings on the bottom of the base. A is the lowest and D is the highest setting.

3. You can fine tune this setting with the plus (+) and minus (-) buttons on the back of the charging base.

4. If this doesn't fix the echo, try moving the configuration dial on the left side of the charging base. The recommended setting for most phones is 1.

Posted on Jul 18, 2009

  • 5 Answers

SOURCE: headset not going into pairing mode.

Hold down round button on earbud for 5-6 seconds until the lights blink alternating red and blue.....then, enable your phone/device to connect in pairing mode. This will be a "find device" command or something similar. Once they recognize each other....it will send you a screen to enter a code. This will be 0000.....enter that...and once they pair...you are good to go.

Posted on Mar 08, 2010

  • 1 Answer

SOURCE: plantronics discovery 925 will not stay on after a full charge

I'm having this same exact problem man!!

Posted on Mar 17, 2010

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