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Appendix 1 Industry Application
Appendix 1.1 Wireless Surveillance of Safe Site
System Diagram (Standard Proposal)
Appendix Figure 1-1
The recommended standard wireless surveillance proposal of construction site adopts point-to-point
transmission. Receiving end adopts DH-PFM880 device, which provides necessary technical support for
future expansion.
No.
Type
Model No.
Qty.
Description
Feature
1
Wireless
receiving
end
DH-PFM88
0
1
IP66, wide temperature: -30~70°,
wireless bandwidth: 300M, coverage
area: 3km, standard power supply,
high-power antenna and dual feeder
It applies to outdoor
high
temperature
and low temperature
environment.
2
Wireless
client
DH-PFM88
1
1
Outdoor waterproof, wide temperature:
-30~70°, wireless bandwidth: 300M,
coverage area: 3km, standard power
supply
It applies to outdoor
high
temperature
and low temperature
environment.
3
Switch of
machine
room
(optional)
DH-S4200-
24T
1
Gigabit
management
switch,
24*10/100/1000Base-T,
4*SFP
(Combo) light, natural heat dissipation
without fan, dustproof design
It
applies
to
non-standard
machine
room
environment.
Appendix Table 1-1 Recommended Model Selection List of Standard Proposal
