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S P E C I F I C A T I O N S
2
T A B L E 1 : M D R 2 9 X S P E C I F I C A T I O N S
I N T E R F A C E
Serial Interface Connector
DB-9 Male (RS-232), Terminal Block (RS-485), Type B USB (USB)
RF Connector
RPSMA Jack
Serial Interface Data Rate
Baud rates from 1200 bps to 115,200 bps
Power Consumption (typical)
400 mA @ 12VDC
Channels
32 (USA); 7 (Australia)
Supported Network Topologies
Point-to-Point, Point-to-Multipoint
Security
One byte System ID. 56-bit DES encryption key.
Interface Buffer Size
Input/Output:
256 bytes each
O P E R A T I O N A L
Frequency Band
902 – 928 MHz (USA); 915-928 MHz (Australia)
RF Data Rate
76.8 kbps fixed
RF Technology
Frequency Hopping Spread Spectrum
Output Power
Conducted (no antenna)
EIRP (3dBi gain antenna)
MDR292/4A:
743mW typical
1486mW typical
MDR291A:
100mW typical
200mW typical
Supply Voltage
MDR292/4A:
7-18VDC
MDR291A:
USB Supplied 5V
Sensitivity
-100dBm typical @ 76.8kbps RF Data Rate
Range, Line of Site (based on
3dBi gain antenna)
MDR291A:
Up to 4 miles
MDR292/4A:
Up to 20 miles
E N V I R O N M E N T A L
Temperature (Operating)
-40
°
C to 80
°
C
Temperature (Storage)
-50
°
C to +85
°
C
P H Y S I C A L
Dimensions
4.4 x 2.7 x 1.4 inches
Weight
6 oz (170 g)
C E R T I F I C A T I O N S
FCC Part 15.247
MDR291A:
KQLAC4490-100
MDR292/4A:
KQLAC4490
Industry Canada (IC)
MDR291A:
2268C-AC4490
MDR292/4A:
2268C-AC44901000
