User Manual
FCC WarningShenzhen Sonoff Technologies Co., Ltd.
FCC Radiation Exposure Statement: 
FCC Warning
Change s or modifications not ex pres sly a pprov ed by the party re sponsible for 
compliance could avoid the user’s authority to operate the equipment. 
Note: 
— Reorient or relocate the receiving antenna. 
— Increase the separation between the equipment and receiver. 
— Connect the equipment into an outlet on a circuit different from that to which the 
 receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help. 
This device complies with part 15 of the FCC Rules. Operation is subject to the following 
two conditions: (1) This device may not cause harmful interference, and (2) this 
device must accept any interference received, including interference that may cause 
undesired operation. 
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled 
environment. This equipment should be installed and operated with minimum 
distance20cm between the radiat or & your body. This transmitter must not be 
co-located or operating in conjunction with any other antenna or transmitter. 
This equipment has been tested and found to comply with the limits for a Class B 
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to 
provide reasonable protection against harmful interference in a residential installation. 
This equipment generates, uses and can radiate radio frequency energy and, if not 
installed and used in accordance with the instructions, may cause harmful interference 
to radio communications. However, there is no guarantee that interference will not 
occur in a particular installation. If this equipment does cause harmful interference 
to radio or television reception, which can be determined by turning the equipment 
off and on, the user is encouraged to try to correct the interference by one or more 
of the following measures: 
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