Feature: ULTRA LOW POWER DATA WIRELESS MODULE *Power supply:DC 5v; *RF power:≤500mw; *Receiving current:<25mA; *Transmitting current:<400mA; *Sleep current:<20uA; *Transmission distance can reach 2Km *Size:53mm*38mm*10mm (without antenna port ). Extend: 1) Update your product抯 capabilities or create new ones with our simple to use modules; 2)We can provide you in a variety of design and manufactured products at very reasonable prices; 3)Your design and logo are welcome; 4)Excellent technical support available to help you integrate our modules in your product; 5)Offer one-year warranty, 30-Day Satisfaction Guarantee. Contact person:Jancy skype:jancy20061