4
pulse
Width of pulse
80±20ms
Pulse constant
1600imp/kWh
6400imp/kWh,400imp/kWh
commu
nicatio
n
RS
485
Interface and
communication
RS485
：
Modbus RTU
Range of
communication
address
Modbus RTU:1~ 247
Baud rate
1200bps~19200bps
2G
Working band
GSM 850
，
EGSM 900
，
DCS 1800
，
PCS 1900
Transmission rate
GSM (Max.): 85.6 kbps (DL) / 85.6 kbps (UL)
4G
Working band
GSM 990/1800 MHZ LTE-FDD B1/B3/B5/B8
LTE-TDD B34/B38/B39/B40/B41
Transmission rate
LTE-FDD: 10 kbps (DL) / 5 kbps (UL)
NB
Working band
Cat NB2
：
B3/B5/B8/B20/B28
Transmission rate
LTE Cat NB1 (Max.): 25.5 kbps (DL) / 62.5 kbps (UL)
LTE Cat NB2 (Max.): 127 kbps (DL) / 158.5 kbps (UL)
Environ
ment
Relative temperature
-25
℃
~+55
℃
Storage temperature
-40
℃
~+70
℃
Relative humidity
≤95℅
(No condensation)
Altitude
<2000m
5
Dimension drawings (Unit: mm)
DDSY1352
