MCU (Microcontroller unit)
Model: STM32WB55RG
Application processor: ARM Cortex-M4 32-bit 64 MHz
Radio processor: ARM Cortex-M0+ 32-bit 32 MHz
Radio: Bluetooth LE 5.4, 802.15.4 and proprietary
Flash: 1024 KB (shared between application and radio)
SRAM: 256 KB (shared between application and radio)
LCD Monochrome
Resolution: 128×64 px
Controller: ST7567
Interface: SPI
Diagonal Size: 1.4“
Transceiver: CC1101
TX Power: -20 dBm max
Frequency bands (depends on your region):
● 315 MHz
● 433 MHz
● 868 MHz
● 915 MHz
Frequency: 100-2500 Hz
Sound Output: 87 dB
Type: Coin
LiPo 2100 mAh
Up to 28 days battery life
Size: 100x40x25 mm (3.95×1.58×1.01 inches)
Weight: 102 grams (3.6 ounces)
Materials: PC, ABS, PMMA
Operating temperature: 0° to 40° C (32° to 104° F)
13 I/O pins available to user on external 2.54 mm connectors
3.3V CMOS Level
Input 5V tolerant (See AN4899)
Up to 20 mA per digital pin
TX power: 4 dBm max
RX sensitivity: -96 dBm
Data rate: 2 Mbps
RX wavelength: 950 nm (+/-100nm)
RX carrier: 38 KHz (+/-5%)
TX wavelength: 940 nm
TX carrier: 0-2 MHz
TX power: 300 mW
Supported protocols:
● NEC family
● Kaseikyo
● RCA
● RC5, RC6
● Samsung
● SIRC
Transceiver: ST25R3916
Frequency: 13.56 MHz
Supported cards:
● ISO-14443A/B
● NXP MIFARE Classic®, Ultralight®, DESFire® etc.
● FeliCa™
● HID iClass (Picopass)
● NFC Forum protocols
Frequency: 125 kHz
Modulation: AM/OOK
Coding: AKS, PSK
Supported cards:
● EM400x, EM410x, EM420x
● HID
● Indala
● FDX (A & B)
● Pyramid
● AWID
● Viking
● Jablotron
● Paradox
● PACStanley
● Keri
● Gallagher
● Nexwatch
Force value: 30 N
Speed: 13500 rpm
Up to 256 GB microSD card (SPI mode)
2-32 GB card recommended
Read/Write speed: up to 5 Mbps
Supported file systems: FAT12, FAT16, FAT32, and exFAT
5-button directional pad
Back button
Type-C, USB 2.0 (12 Mbps)
USB device
Charging (1A max)
Supported protocols:
● Dallas DS199x, DS1971
● CYFRAL
● Metakom
● TM2004
● RW1990
