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信号设备

A yellow device with a button mounted on a utility pole
YuzurigimaY

Yuzurigima

Traffic lights and communication equipment viewed between skyscrapers
RYUURIR

RYUURI

Tall pole with speakers and antenna at the top
yusso photoy

yusso photo

Multiple white antennas mounted on a communication tower
pastap

pasta

Old signal pole with a box and surrounding grass
Ao AidaA

Ao Aida

Satellite dish installed under a cloudy sky
@m4n4cm

m4n4c

Curved railway tracks with signaling equipment
nnnoooon

nnnoooo

An old railway signal and its surrounding landscape
ookinate23o

ookinate23

Illuminated red warning light on a control panel
DragonOneD

DragonOne

Control panel of a white device featuring a power button and Wi-Fi indicators
DragonOneD

DragonOne

White alarm panel featuring a red warning light and red button
sakurais

sakurai

A red train parked on the tracks with signaling equipment in the background
taso583t

taso583

Construction site with traffic signs and safety equipment
DragonOneD

DragonOne

A traffic signal unit featuring a solar panel and ventilation fan
ookinate23o

ookinate23