User's Manual

9. Technical data
Circle
Parameters Min. Nominal Max. Unit Remarks
Power supply
Supply voltage 85 120 140 VAC
Frequency 50 / 60 Hz
Power dissipaon 0.19 0.9 W
115 VAC, 50 Hz, 77˚F,
unloaded
Output
Output current 15 A
cos phi 1, max. inrush
current: 80 A during
10 ms.
Energy measurements
Accuracy (current usage) 5% ± 0.5 W
120V AC, 60 Hz, 73.4˚F,
range: 1.035-1800W
Accuracy (cumulave) 1% ± 0.2 W 1 hour cumulave data
Permanent memory
Storage capacity 512 kByte
ZigBee communicaon
Baudrate 250 kbps O-QPSK
Frequency 2400 2483.5 MHz
16 channels
of the 2.4 GHz ISM band
Bandwidth 2,0 MHz 5 MHz channel spacing
Receiving sensivity
(signal/noise rao)
-92 -97 -98 dBm 1% PER (20 byte packet)
Transmission power -32 3 5 dBm
Circle+
In addion to the specicaons of the Circle, the Circle+ features a built-
in clock.
Parameter Min. Max. Unit
Clock operang me without power supply 6.0 8.6 Days
Sck
Parameters Min.
Nominal/
type
Max. Unit Remarks
Power supply
Supply voltage 5 Vdc Powered by USB host
Dissipated power 0.375 W
Connector USB (A)
Frequency 2400 2483.5 MHz
16 channels
of the 2.4 GHz ISM band
Usage and storage temperatures for Circle, Circle+ and Sck
Environmental condions Min. Max.
Temperature (operaonal) 0 ˚C 140 ˚F
Humidity (operaonal, non-condensing) 0 % RH 95 % RH
Temperature (storage) -4 ˚F 158 ˚F
Humidity (operaonal, non-condensing) 0 % RH 95 % RH