The LKR-12 ListenTALK Receiver Basic is a one-way device designed for those participants that only need to listen to ListenTALK group conversations. The LKR-12 is equipped with Listen The LKR-11 ListenTALK Receiver Pro is a one-way device designed for those participants that only need to listen to ListenTALK group conversations. The LKR -11 is equipped with Listen Technologies’ ergonomic design, near field communications, encryption technology for added security, easy to use volume control and quick visible status via the OLED display. ListenTALK Receiver Pro is the simplest option for one-way communication among groups of two or more people in any environment. In addition to the included Listen Ear Speaker, ListenTALK can be used with standard smartphone earbuds or Listen Technologies headphones.
| Dimensions (H x W x D) with Belt Clip | 10 x 5.4 x 2.4 cm (3.93 x 2.13 W x 0.93 in.) |
| Unit Dimensions (H x W x D) | 10 x 5.4 x 1.6 cm (3.93 x 2.13 W x 0.63 in.) |
| Unit Weight | 79 g (2.79 oz.) |
| Shipping Weight | 206 g (7.20 oz) with 454 g (1.0 lbs.) minimum |
| Enclosure material | PC ABS Plastic |
| Color | Black, Chrome Buttons |
| Indicators | Display- 64 x 128 OLED, Variable brightness |
| LED- RED/White multifunction (Mute, Charge Status) | |
| User Controls | Volume up, Volume Down, Power/Status |
| Programming | Via software and USB port on unit or via software and USB port on Docking Station |
| Connections | Headset- 3.5mm TRRS, CTIA complaint |
| USB- Micro USB, Control and Charging | |
| Charger- 4 Contact, Control and Charging |
| Headphone Output | Speaker Load- 16 – 32 ohm load |
| Max Output Power- 67 mW, 16 ohm load, Threshold of Clipping | |
| System | Frequency Response- 40 Hz to 15 kHz +/- 3dB, 22kHz low pass filter |
| SNR- 70 dB, A- weighted, Threshold of Clipping | |
| THD- 0.5% @ 1kHz, 22kHz low pass enabled |
| Operating Frequency | 1920 to 1930 MHz – North America |
| 1880 to 1900 MHz – Europe, Australia | |
| 1895 to 1905 MHz – Japan | |
| Typical Range | Indoor 100 m, Outdoor 200 m, depending upon conditions – North America |
| Indoor 150 m, Outdoor 300 m, depending upon conditions – Europe, Australia | |
| Modulation | GFSK – FHSS |
| TDD/TDMA/DCA | |
| Security | Subscription- 40 bit (Pin Free) |
| Authentication- 32 bit | |
| Encryption- 64 bit | |
| NFC Frequency (Near Field Communications) | 13.56 MHz |
| Battery Type | Lithium – ion, rechargeable non-proprietary removable, 1200 mAh |
| Optional- 3 AAA Battery Compartment | |
| Typical Operating Time | Li-ion – 12 Hours |
| AAA – 7 Hours | |
| Typical Charge time | 4 Hours |
| Power Save Modes | Power down on loss of signal |
| Power down on disconnection of headphone (1 min) | |
| Power down on charging |
| Temperature | Operation- -10 °C (14 °F) to 40 °C (+104 °F) |
| Storage- -20 °C (-4 °F) to 50 °C (+122 °F) | |
| Relative Humidity | 0 to 95% relative humidity, non-condensing |
| Standards | FCC part 15, ICS-03, CE, RCM, MIC, RoHS, WEEE |
