WSSFC-LC is a Sigfox transmitter for a load cell channel. The transmitter consists 4-terminal for an external resistive bridge strain gauge load cell and a M12 female connector for an external power supply. The load cell inputs are adjustable sensitivity to ensure high resolution readings and up to 1Hz sampling rate. With ultra-low power design and smart firmware, the device powered by a Solar panel/External power with rechargeable batteries to allow continuous operation up to 10 years. WSSFC-LC could support all regions of Sigfox network in over the World, RC1, RC2, RC3, RC4, RC5, RC6, RC7. The applications of the transmitter are weighing scales, towing loads and rope tension, structural stress measurement in metrology, web control, aerospace, medical devices, automotive testing, and manufacturing.