Klein Tools Bluetooth Speaker AEPJS 2

Klein Tools AEPJS 2 is a powered speaker designed to provide high-quality sound for smartphones, tablets, computers, or other audio devices.


  • USB Type C
  • 1/8″ (3.5 mm) Auxiliary Cable
  • Dimensions: 4.22″ x 4.11″ x 1.59″ (107.2 x 104.4 x 40.4 mm)
  • Weight:9.5 oz. (269.3 g)
  • Wireless Compatibility: Devices with Bluetooth® Version 5.0
  • Wireless Connection Range: 32.8 ft. (10 m) in open space
  • Support Profiles: A2DP, AVRCP, GAVDP, HFP
  • Output Power: 3W (5W maximum)
  • Battery Type: Internal, Li-Ion, 3.65V / 2150mAh• Battery Life: Approx. 10 to 13 hours at 70% volume
  • Charging Requirements: Maximum 5V DC, Minimum 0.45A
  • Certifications: CE, FCC, IC, & BC, NOM
  • Operating/Charging Temperature: 32° to 104°F (0° to 40°C)
  • Storage Temperature: -22° to 140°F (-30° to 60°C)
  • Relative Humidity: <85% non-condensing
  • Drop Protection: 9.8′ (3 m)
  • Ingress Protection (IP) Rating: IP54

Features, Ports and Buttons

Charging Battery

Connect the USB Type C cable connection to USB charging port 6; plug the other end of the cable to the computer, USB AC adapter, or other USB power supply (not included). USB adapter/power supply should not exceed the specified charging voltage and current (Max. 5V DC, min. 0.45A). The normal charging time is 4 to 6 hours. NOTE: Fully charge before use. The first-time charge should be at least 4 hours.

LED Indicator ColorStatus
Solid RedBattery charging (LED off when fully charged)
Flashing RedLow battery
Solid BlueActive Bluetooth wireless connection
Slow-Flashing BlueAttempting to pair with wireless device
Quick-Flashing BlueAttempting to auto-link to paired wireless device
Solid GreenAux line-in connection (overrides wireless connection)
No LEDUnit is off, battery is dead, or battery has finished charging

ON/OFF: Press & hold power button 1 for 3 seconds, a tone will sound. The unit will automatically power off after 10 minutes of inactivity.

PAIRING: Wireless connection activates automatically and is ready to pair when the unit is turned on. On your Bluetooth® wireless compatible device, enable Bluetooth® and search/scan for devices that can be paired. Select “AEPJS 2” when it appears (refer to the user manual of your device). If necessary, enter “0000” as a pairing passcode. A tone sounds after a successful pairing.

NOTE: Unit automatically attempts to connect the last paired wireless device, but is ready to pair with any compatible device if the last paired device is not detected within 5 seconds of powering on.

DISCONNECT PAIRING: 1) Turn unit off; -or- 2) Double-press Power Button 1 (tone sounds); -or- 3) Plug a cable into Aux jack 5; -or- 4) turn off Bluetooth® wireless connection in paired device.

RESET WIRELESS CONNECTION OR PAIRING WITH DIFFERENT DEVICES: Double-press Power Button 1 (tone sounds). Repeat the Pairing procedure with different devices.

PLAYING AUDIO: Use your device to control the speaker or use the built-in control buttons on the speaker.

  • Press Play/Pause/Talk button 3 to play or pause audio on your device.
  • Short-press the “-” 2 or “+” 4 button to adjust the speaker volume. A tone will sound when the maximum volume is reached. Volume may also be controlled from your audio device.
  • Long press the“-” 2 or “+” 4 button to skip backward or forward (respectively) during a song.

AUXILIARY AUDIO-IN: Connect one end of the auxiliary cable to the AUX jack 5 of the speaker; plug the other end of the cable to the line-out or headphone jack of your device.

SPEAKERPHONE OPERATION: When an incoming call occurs, playing music is muted & ring tone sounds. Short-press Play/Pause/Talk 3 button to answer the call, or long-press to ignore.

  • To disconnect the call, short press the Play/Pause/Talk button 3 to hang up.
  • To redial last call, long press Play/Pause/Talk button 3 when the speaker is playing music.

LOW BATTERY INDICATION: A continuous double-beep tone will sound when the battery level drops to approximately 10%. Speaker will automatically power off when the battery level is below 3%. Recharge speaker as soon as possible.


  • No user-serviceable parts inside. Do not open the enclosure or attempt to repair this speaker.
  • Never lubricate any part of this speaker.
  • Never place this speaker on other electrical equipment.
  • Do not expose to direct sunlight, open flame, heat sources, equipment that produces heat, or extremes in environmental temperature.
  • Never immerse in water or other liquids. Avoid spilling liquids or falling foreign objects into openings or vents on the speaker enclosure.
  • The water-resistant cover must be properly sealed to achieve specified water & foreign object ingress protection. Keep seal free of dirt, oil, sand, or other material that interferes with proper sealing. Failure to do so can result in a risk of fire or electric shock.
  • Do not open water-resistant cover if wet or in a wet environment. Dry the speaker thoroughly and the seal around the water-resistant cover completely before opening the water-resistant cover.
  • When the speaker is in use or charging, make sure there is adequate space to allow ventilation of internally generated heat.
  • Use a safety-rated power supply or wall adapter. Never use a power supply or wall adapter that exceeds the specified charging voltage and current.
  • Route the power supply cable so that it will not be stepped on or pinched by other objects.