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Parameter

Master chip

ASR6502 (48MHz ARM® Cortex® M0+MCU)

Wireless communication

LoRa

Node-to-node communication or LoRaWAN

LoRa chip

SX1262

LoRaWAN Area

Hardware version

Support frequency

LF

EU433

CN470

HF

IN865

EU868

US915

AU915

KR920

AS923

LoRa maximum output power

22dB ± 1dB

Hardware resource

2 × UART; 2 × SPI; 2 × I2C; 1 × SWD; 3 ×12-bits ADCinput interface; 8-channel DMA engine; 16 × GPIO

FLASH

128kB internal FLASH

RAM

16kB internal SRAM

Interface

1 × Micro USB; 1 × LoRa antenna interface (SMA); 2 × 16×2.54 pin + 2 × 2×2.54 pin

Maximum size (including protruding parts such as switch and battery compartment)

56.6 × 24 × 21.5 mm

USB to serial chip

CP2102

Battery

1/2AA Lithium

Solar energy

✕

Battery detection circuit

✔

External device power control

✔

Low power

Deep sleep 3.5µA

Display size

No display

Working temperature

-40~80°C

Electrical features

Condition

Minimum

Typical

Maximum

Power supply

USB Powered (≥500mA)

4.7V

5V

6V

Lithium Powered (≥250mA)

3.3V

3.7V

4.2V

3.3V (pin) powered (≥150mA)

2.7V

3.3V

3.5V

5V (pin) powered (≥500mA)

4.7V

5V

6V

Power consumption (mA)

LoRa Rx mode

10mA

LoRa 10dB output (typical)

70mA

LoRa 14dB output (typical)

90mA

LoRa 17dB output (typical)

100mA

LoRa 20dB output (typical)

105mA

Sleep mode (USB powered)

11µA

Sleep mode (3.3V header powered)

3.5µA

Output

3.3V pin output

500mA

5V pin output (USB powered only)

Equal to the input current

External device power control (Vext 3.3V)

350mA