Discreet boundary design
A compact, low-profile enclosure integrates cleanly into conference tables.
Microphones
Model JI140B · wireless
Wireless Boundary Microphone
Wireless boundary microphone with variable digital directivity, LCD status display and rechargeable battery operation.
JI140B
01 / 02
PatternsFive selectable
MicrophoneCardioid condenser
Frequency response40 Hz - 20 kHz
Battery2000 mAh lithium
Speaking timeUp to 15 hours
Overview
Low-profile wireless capture with selectable directivity.
The Jistron JI140B is a discreet wireless boundary microphone for meeting tables, boardrooms and flexible conference spaces.
Five digitally selectable polar patterns adapt pickup to each seating arrangement. An LCD presents battery, ID, microphone status, sensitivity, speaking time and connection information, while the 2000 mAh battery provides up to 15 hours of speaking time.
Engineering
Key features
Five polar patterns
Select Omni, Wide Cardioid, Cardioid, Supercardioid or Figure-8 directivity.
Natural voice capture
A 40 Hz - 20 kHz response supports clear, full-range spoken audio.
Variable directivity
Digital pattern selection adapts one microphone to multiple room layouts.
LCD status display
Battery, ID, status, sensitivity, speaking time and connection remain visible.
Long battery operation
A 2000 mAh battery supports up to 15 hours speaking and 30 hours standby.
Flexible charging
Charge through USB Type-C or a compatible external charger.
Wireless freedom
Encrypted wireless operation reduces table cabling and speeds room reconfiguration.
Operational functions
Control designed into the unit.
BatteryID AddressMic StatusSensitivitySpeaking TimeConnection
Technical data
Specifications
Technical data for model JI140B.
Microphone & audio
- Product type
- Wireless boundary microphone
- Microphone type
- Cardioid condenser
- Selectable patterns
- Omni · Wide Cardioid · Cardioid · Supercardioid · Figure-8
- Frequency response
- 40 Hz - 20 kHz
- Sensitivity
- -32 dBV
- Distortion
- < 1%
- Switch
- Mechanical switch
Wireless & display
- RF output
- ≤ 10 dBm reference
- LCD information
- Remaining battery · ID · microphone on/off · sensitivity · speaking time · connection
Power & physical
- Battery
- 2000 mAh lithium battery
- Active power
- 0.47 W
- Standby power
- 0.21 W
- Speaking time
- Up to 15 hours
- Standby time
- Up to 30 hours
- Charging
- USB Type-C or external charger
- Charging input
- 5 V / 2 A
- Dimensions
- 115 × 67.5 × 35 mm
- Weight
- 187 g
Ordering information
- Model
- JI140B
- Description
- Wireless boundary microphone with selectable directivity
Product documentation
JI140B Datasheet
Complete polar-pattern, wireless, display, battery and physical specifications for the JI140B.
Project enquiries
Let's discuss your next AV project.
Share your project requirements and our team will prepare the right product and integration information for your application.