About product and suppliers:
            495 gsm r wireless module products are offered for sale by suppliers on Alibaba.com, of which sensors accounts for 1%, other communication & networking modules accounts for 1%. 

A wide variety of gsm r wireless module options are available to you, such as resistance sensor. You can also choose from temperature sensor gsm r wireless module, as well as from digital sensor gsm r wireless module

There are 8 suppliers who sells gsm r wireless module on Alibaba.com, mainly located in Asia. The top countries of supplier is China, from which the percentage of gsm r wireless module supply is 100% respectively.