1.HC-11 can not connect to HC-12.Their work is independently each other .

2.Silent current 3. 4ma, ultra-low power consumption.

3.Long distance, range 1 to 40m.(less than 1 m, module can’t work normally).

4.Support 3.3V~5V.

5.Support serial pass-through mode, replacing serial line (half duplex).

6.Support IO level,also means transmitting digital level model.

7.Support IO level latch mode.

8.Can set the frequency point, set the address, automatic filtering.

9.Module size: 27.8mm*14.4 mm*4 mm.

10.Suitable for network design.

11.Module supporting software upgrades.