WiSnap™ 174 WiFi RS-232 Serial Embedded Module

The WiSnap embedded WiFi RS-232 kit provides seamless connectivity for most any RS-232 serial devices. The WiSnap WiFi module can be used to WiFi enable virtually all legacy RS-232 devices to the Internet. WiSnap technology enables simple, fast, and accurate data collection to any WiFi Enabled device. This includes Android, iOS [iPad, iPhone, iPod Touch], BlackBerry, Symbian, WebOS, OS X, Linux, Windows Phone 7, Windows Mobile (Pocket PC, Classic, Professional, Smartphone), Windows 8 / 7 / 2008 / 2003 / Vista / XP / 2000.

WiSnap can be powered from 5-12 VDC provided to pin-9 of DB9 connector when using the DB9 ribbon cable.
Or power from a regulated voltage as low as 3.3VDC connected to voltage in on the PCB.

WiSnap can enable wireless WiFi Internet connections to legacy devices like barcode scanners, NFC-RFID scanners, scales, multimeters, GPS receivers, vending machines, sensors, and most all RS-232 devices.

Use Wi-Fi to connect RS-232 data to to iPad, iPhone, iPod Touch, Android and hundreds of other models of mobile phones and mobile Internet devices.

Some customers embed the 174 unit into their product directly, other customers choose to use the XV-W or XV-U model.

Need longer range WiFi RS-232 serial options, or battery powered WiFi serial dongle? Consider the WiSnap M1 module options.

Compare WiSnap M1 & M2 modules

  WiSnap M2
(Module PN=171, PCB PN=174)
WiSnap M1
(Module PN=131, PCB PN=134)
Dimensions 26 x 18 x 3.1 mm 37 x 20 x 4 mm
Transmit Power Firmware configurable:
0 to 10dBm
Fixed 18dBm
Antenna Options PCB trace Chip, U.FL. connector
Temperature Range -45°C to +85°C RN-131G: -30°C to +85°C
RN-131C: 0°C to +70°C
Power 4μA sleep, 30mA Rx,
185mA at 10dBm Tx
4μA sleep, 40mA Rx,
200mA Tx

Compare WiSnap PCB kits 174 & 134 below. Note: the WiFi RS-232 dongle with 4-inch antenna at the right uses the M2 module.

Setup of the WiSnap to your WLAN is as easy as a few taps on your mobile device. See WiSnap Setup options.

Want a software jumpstart?

WiSnap and Grid-In-Hand® Mobile Grid captures active RFID tag data into Android - hotspot connection.
WiSnap and Grid-In-Hand® Mobile Grid captures active RFID tag data into iOS - hotspot connection.

WiSnap and Grid-In-Hand® Mobile Grid captures active RFID tag data into Android - access point mode.
WiSnap and Grid-In-Hand® Mobile Grid captures active RFID tag data into iOS - access point mode.

WiSnap and Grid-In-Hand® Mobile Grid captures RS-232 Serial data into iOS - ad-hoc connection.

Get complete Java source code for JavaTerm app shown here: JavaTerm app with Java SerialPort API.
Buy SerialPort API - .
Want source code for WiSnap Setup app on iOS App Store? - Click here to purchase source code.

Need to process ASCII data on iOS? (iPad/iPhone/iPod)
When your device sends ASCII data with the form <DATA>CR (data followed by carriage return i.e. hex 0x0D) you can use Mobile Grid and iScanBrowser apps already on the App Store, to process your data, no programming needed!

Grid-In-Hand® Mobile Grid for iOS collects data and can send as Excel spreadsheet anywhere 
Get Grid-In-Hand® Mobile Grid Plus app from the App Store

iScanBrowser for iOS - iPad / iPhone / iTouch - The absolute easiest way to scan Barcode & RFID data to web pages, also has kiosk features.
Get iScanBrowser app from the App Store

Note: The WiSnap is available special order with a DB9 female plug, minimum order size will apply.

Need a mobile Bluetooth RS-232 adaptor? Consider the BlueSnap.

The WiSnap can be configured over a standard RS-232 cable using any terminal software such as JavaTerm (in the SerialPort API), TeraTerm, CoolTerm, or PuTTY.
The WiSnap can also be configured over Wi-Fi using a RAW TCP/IP socket connection, or Telnet session from applications such as PuTTY or TeraTerm.

WiSnap™ 174 WiFi RS-232 Serial Embedded Module products
  • Qualified 2.4GHz IEEE 802.11b/g transceiver
  • High throughput, up to 4Mbps sustained data rate with TCP/IP and WPA2
  • Ultra-low power (4μA sleep, 30mA Rx, 185mA at 10dB m Tx)
  • Small, compact surface mount module
  • On board ceramic chip antenna and U.FL connector for external antenna
  • 8 Mbit flash memory and 128 KB RAM
  • UART and SPI (future) data/control interfaces
  • 10 general purpose digital I/O
  • 8 analog inputs
  • Real-time clock for wakeup and time stamping/data logging
  • Accepts 3.3V regulated or 2-3V battery with on board boost regulators
  • Supports Adhoc and Infrastructure mode connections
  • On board ECOS-OS, TCP/IP stacks
  • Wi-Fi Alliance certified for WPA2-PSK
  • FCC / CE/ ICS certified and RoHS compliant
  • Host Data Rate Up to 2.7 Mbps for UART
  • Memory 128 KB RAM,2MB ROM, 2 KB battery-backed memory, 8 Mbit Flash.
  • Intelligent, built-in power management with programmable wakeup
  • Can be powered from regulated 3.3-3.7V source or 2.0-3.0V batteries
  • Real time clock for time stamping, auto-sleep and auto-wakeup modes
  • Configuration over UART or wireless interfaces using simple ASCII commands
  • Over the air firmware upgrade (FTP), and data file upload.
  • Secure WiFi authentication WEP-128, WPA-PSK (TKIP), WPA2-PSK (AES).
  • Built in networking applications DHCP client, UDP, DNS client , ARP, ICMP ping, FTP, HTTP
  • 802.11 power save and roaming functions
  • WiFi Range [line-of-sight to quality access point]: 150 feet (wire antenna), > 600 feet (chip antenna), > 800 feet (4" off-chip antenna).

Note: Device may not be exactly as pictured.