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BTR 240 2.4GHz Digital Intercom

BTR-240 Wireless Base Station

The BTR-240 from TELEX(RTS) : with best class audio performance, license-free operation and an array of user-friendly features, wireless intercom has never been easier.


BTR240 Intercom System

BTR240 Intercom System can Using up to 8 Simultaneous Belt-packs

BTR-240 Front


  • License Free 2.4GHz, IEEE 802.11b WLAN technology
  • Expand coverage using BTR-24 access points
  • Multi-level security and audio encryption
  • 2-wire and 4-wire intercom interface
  • ClearScan channel selection
  • Auto-select Electret or Dynamic microphone
  • Choice of two (2) independent or simultaneous audio channels
  • TR-240 beltpacks operate wired or wireless
  • Eight (8) full-duplex beltpacks with virtually unlimited number of half-duplex beltpacks
  • TR-240 beltpacks can operate as an access point
  • Multiple antenna options and accessories
  • Durable ABS construction
  • Easy-to-read LCD indicates system status
  • Removable Li-Ion batteries with wide temperature range and up to eight (8) hours of operation.


RF Technology IEEE 802.11b WLAN
FCC License None Required
Frequency Band of Operation North America: 2.412 to 2.462GHz | Europe: 2.412 to 2.472GHz
BTR-240 Transmitter Output Power North America: 200mW | Europe: 70mW
TR-240 Transmitter Output Power 70mW
BRT-240 Antennas Multiple Omni and Directional Available
TR-240 Antennas Internal Dipoles
Security and Encryption Technology 802.11 WiFi: 40-bit and 104-bit WEP. Audio: 64-bit DES
Number of Full-Duplex Beltpacks 81
Number of Half-Duplex Beltpacks ≥ 100
Audio Frequency Range 350Hz to 3.5kHz
Dynamic Range ≥ 62dB
System Latency ≤ 140msec
BRT-240 Headset Output 100mWrms into 300 Ohms
TR-240 Headset Output 70mWrms into 300 Ohms
4-Wire Input/Output Level Adjustable (2Vrms typical)
Audiocom 2-WireInput/Output Level Adjustable (0.775Vrms typical). Line Impedance 200 Ohms
RTS 2-Wire Input/Output Level Adjustable (1Vrms typical). Line Impedance 200 Ohms
Clear-Com 2-WireInput/Output Level Adjustable (1Vrms typical). Line Impedance 200 Ohms
Auxiliary Input Level Adjustable (2Vrms typical)
Auxiliary Output Level Adjustable (2Vrms typical into 600 Ohms)
Speaker Output Level Adjustable (1Vrms max into 8 Ohms)
Front Panel LCD 122 x 32 Dot Matrix with Adjustable Contrast
Programming Port Ethernet (RJ-45)
BTR-240 Power Requirements 12–15VDC, 1.5 Amps
TR-240 Power Requirements Lithium Ion Rechargeable Battery, 7.5VDC
Battery Life Up to eight (8) hours
Battery Recharge Time Via TR-240: approx. 8 hours. Via CHG-240 four bay charger: approx. 2.5 hours
TR-240 Low Battery Indication Approx. 15 minutes of battery life left
Temperature Range -4°F to 130°F (-20°C to 55°C)
BTR-240 Dimensions 1RU, 7.5″ L x 19″W x 1.75″H (191mm x 483mm x 45mm)

BTR-240 Base Station with TR-240 & HR-1 Headset

TR-240 Beltpack with HR-1 Mid-weight Headset




BTR-240 Series Directional Antenna Mounting

BP240 Battery Pack & CHG240 Quick Charger

BP240 Battery Pack & CHG240 Quick Charger

CHG-240 4 Bay Charger & BP-240 Battery Packs