Product summary: * Carrier frequency:315M, 434MHz, 450M, 670M, 868M, 915M or ISM others. * Provide rich interface: standard RS-232/TTL/RAS-485; * 8 channels, expandable for 16/32 channels according to requirements of customers; * Baud rate: 1200/2400/4800/9600/19200/38400bps; * Interface format: 8N1/8E1 user-defined, or customization for other format interface; * Integration of receiving and transmitting and half duplex; * Low power consumption and sleep function; * Operation Temperature: -20~+65Celsius (customized batch order for industrial level); Extend: 1) Update your product? 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