User's Manual

US7,420,471; US8,169,335; US8,232,888; US5,939,986;
US6,810,353; AU2005289704; ZA2007/02919; ZA2008/02673;
ZA2010/06816, ZA2010/09068 Patent Pending
2.6 Interferences
There are instances when the magnetic field generated from other sources such as an electrical
panel, motorized machinery, large conductor cables etc. can generate intermittent alarm
signals that are picked up by the Personal Alarm Device. The PAD is designed to be fairly
sensitive to pick up the energy from the Magnetic Field Generator though it is also fairly
selective. This sensitivity can cause the PAD to be triggered by some sources that are producing
a strong magnetic frequency (that happen to fall within our guidelines) if the PAD is very close
to the sources usually within a few inches.
If a user should stand against the wall, near a vehicle path, it is advisable that they do so with
the PAD sticking furthest away from the wall as the wall may have interference sources such as
high current cables or power panels etc. that may silence the PAD.
2.7 PAD Specifications
Part Number: DDAC-PAD
Size: 3.81” x 2.92” / 97mm x 74.2mm
Weight: 4.7oz./ 133g
Input Voltage: 3.5 to 4.2 VDC
Magnetic Field Frequency: none
Receiver Frequency: 73 kHz signal
Transmitter Frequency: 916.48 MHz
Transmitter Power: 0.001W (typical)
PAD Battery: 3.7 VDC Lithium Ion
PAD Battery Capacity: 800 mAh
Charging Specifications: 0.75A at 4.25V max
Only use Lithium Ion Battery Charger
Operating Temperature Range: -30°C to + 70°C ; -22°F to 158°F
Environmental Considerations: 85 dBa minimum (DDAC-PAD); 103 dBa minimum (DDAC-PAD-XL)
Shipping Considerations: Contains a Lithium Ion Battery (packed in equipment)
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