Specifications
4
EMI/RFI WARNING 
RADIO WAVE SOURCES MAY AFFECT POWERED MOBILE VEHICLE CONTROL. 
Electromagnetic (EMI) or Radio Frequency Interference (RFI) refers to the effects that outside sources of 
such energy might have on the control systems of your mobility vehicle.  The interference from these 
sources could cause the vehicle to release its brakes, move by itself, and/or cause damage to the mobility 
vehicle controller. 
The sources of EMI/RFI can be broadly classified into three types: 
• Handheld portable transceivers with antenna mounted directly on the transmitting unit.  Examples 
include: citizens band radios (CB), “walkie talkies”, security, fire and police transceivers, cellular 
telephones, and other personal communication devices. 
• Medium range mobile transceivers. These usually have the antenna mounted outside of a vehicle 
or a building. Examples include: police, fire, ambulance and taxi receivers. 
• Long range transmitters and receivers,  such as commercial broadcast transmitters (radio and TV 
broadcast antenna towers) and amateur (HAM) radios. 
Note: So far as we know, other types of handheld devices, such as cordless phones, laptop 
computers, AM/FM radios, TV sets, CD players and cassette players and small appliances such 
as electric shavers and hair dryers are not likely to cause EMI/RFI problems to your mobility 
vehicle. 
SAFETY PRECAUTIONS 
The following are some precautions you can take to reduce the risk of a mobility vehicle from being affected 
by EMI/RFI. 
1. Do not turn on or use hand held personal communication devices, such as citizens band radios 
(CB) and cellular phones while your vehicle is turned on. 
2. Be aware of nearby transmitters, such as TV or radio stations and try to avoid coming close to them. 
3. Be aware that adding accessories and/or components, or modifying your mobility vehicle in any 
way, may change its EMI/RFI resistance level, thus making it more susceptible to interference from 
radio wave sources. 
4. Turn off your mobility vehicle by removing the key from the key switch when you are getting onto or 
off of your mobility vehicle and never leave the key in the key switch of an unattended mobility 
vehicle. 
5. Report all incidents of unintended movement or unexpected brake releases to Zip’r Mobility. 
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