Adopted LoRa (Long Range) protocol and realizing receiving and transmitting in one single module, the DM20-L datalink module can reach more than 10km
working range while keeping transmitting power at 2W and receiving power at 0.2W.
Featured surface-mounted design, 33×26.5×3.5mm small size and low power, the DM20-L datalink module is specially designed for system developers to do various integrations.
With advantages of stable output power, high receiving sensitivity, low error rate and strong anti-interference ability, the DM20-L shows strong performance for real-time data transmission.
GENERAL
Frequency Range: 410-470 MHz
Channel Spacing: 12.5 kHz
Work Mode: Half-duplex
Frequency Stability: >1.5ppm
Air Baud Rate:
1000bps/11000bps/12000bps/15000bps/18000bps
Serial Port Baud Rate:
4800/9600/19200/38400/57600/115200bps
Power Supply: 3.3 – 4V
Impedance: 50ohm
Protocol Type: LoRa
RECEPTION PERFORMANCE
Receive sensitivity: Better than -118dBm@BER 10-3, 11000bps
Co-channel interference rejection: >-12dB
Received power: 0.25 W
Adjacent channel selectivity: >50dB@25KHz
Spurious immunity: >50dB
EMISSION PERFORMANCE
Transmit power: 0.5W/1W/2W
RF Power stability: ±1dB
Adjacent channel power: >50dB
Second harmonic: <-33dBm
Emission current: < 2A (2W)
PHYSICAL & INTERFACE
I/O Interface: 80-pin SMT, pin pitch 1.27mm
Antenna Interface: IPEX male connector
Size (with connector): 33×26.5×3.5mm
Weight: 5 g
ENVIRONMENTAL
Operating temperature: -40℃ to +70℃
Storage temperature: -40℃ to +85℃
