Wireless-Tag WT51822-S4AT nRF51822 BLE 4.2 Module

The WT51822-S4AT is a high-performance, low-power BLE module based on the Nordic Semiconductor nRF51822 BLE 4.1 chip. It features an integrated PCB antenna, though it also supports external antennas for extended range. This module is designed for use in a variety of compact and energy-efficient wireless communication applications, including IoT, wearables, home automation, and remote sensing. Features: Chipset: nRF51822-QFAA (ARM Cortex™-M0 32-bit processor). Protocol: Bluetooth Low Energy (BLE) 4.1, compatible with BLE 4.0. Memory: 256KB Flash + 16KB RAM. Power Supply: 3.3V DC. Interface: UART (TTL) interface for serial communication. Operating Temperature: -25°C to 75°C (typical: 25°C). Operating Range: Up to 45 meters (Class II). Module Size: 18.5 mm x 9.1 mm x 2.0 mm. Data Packet Length: Up to 200 bytes per packet. Transmission Mode: Transparent Bridged Mode for easy communication. Power Consumption: Low power for battery-powered applications. Antenna: Integrated PCB antenna with optional external antenna support. Package Includes: 1 x Wireless-Tag WT51822-S4AT nRF51822 BLE 4.2 Module

Specifications

Model	WT51822-S4AT
Chipset	Nordic nRF51822 (ARM Cortex-M0)
Protocol	BLE 4.1 (compatible with 4.0)
Memory	256KB Flash, 16KB RAM
Interface	UART (TTL)
Item Type:	Wireless Tag
Model No. / Name:	WT51822-S4AT
CPU	nRF51822-QFAA (ARM Cortex™-M0 32 bit processor)
Memory Capacity	256KB Flash + 16KB RAM
Interface:	UART (TTL)
Module Size (LxWxH) mm	18.5 x 9.1 x 2
Bluetooth Version:	Bluetooth Low Energy (BLE) 4.1, compatible with BLE 4.0
Detection Distance (mm):	0 to 45m，class II level
Shipping Weight	0.015 kg
Shipping Dimensions	5 × 5 × 1 cm