
MARS 300 PRO
V1.0.0
User Manual
Standard Single Transmitter




1
Ÿ Wheel Button on the Side, One-button Rolling Adjustment
Ÿ OLED Screen Display on the Side
Ÿ 300ft Transmission Range between TX and APP (LOS)
Ÿ Transmisssion Latency is 0.1s
Ÿ HDMI Input & HDMI Loop out at TX
Ÿ Supports USB Type-C Power Supply
Ÿ 1 Transmitter Supports up to 3 APPs Monitoring
Ÿ Supports Smart Channel Selection
Ÿ Supports APP Firmware Upgrade
FOREWORD
Thank you for purchasing Hollyland MARS 300 PRO wireless HD video
transmission system. Please kindly read the user manual before using the product.
Hope you have a pleasant experience.
KEY FEATURES

2
PACKING LIST
Transmitter
User Guide
Expansion Accessory
Cold Shoe
USB Type-A to Type-C data cable
x1
①
x1
②
x1
③
x1
④
x1
⑤
①
⑤
② ③
④

3
TYPICAL SETUP
HDMI IN
MONITOR
APP
HDMI LOOPOUT
APP
APP

4
PRODUCT INTERFACES
①
②
③
④
⑤
Built-in Antenna
OLED Screen
Wheel Button
Power Switch
Mounting Hole of the
Expansion Accessory
⑥
⑦
⑧
⑨
①
②
④
③
⑥
⑦
⑤
⑨
⑧
HDMI Loop out
HDMI Input
USB Type-C Interface
1/4 Screw Hole

5
INSTALLATION
①
②
③
④
⑤
①
②
④
③
⑤
ON
Install the transmitter as demonstrated.
Vertical Installation: Secure the cold shoe with 1/4 screw hole at the bottom of
the transmitter and mount it to the camera.
Horizontal Installation: Connect the expansion accessary to the transmitter’s
mounting hole and secure the cold shoe with hole at the expansion accessary.
Then install them on the camera.
Connect the HDMI input of the transmitter with camera’s by HDMI cable.
Connect to a power supply (Compatible with NP-F970 or the same series of
batteries).
Turn on the device.

6
OLED DISPLAY
⑤
⑥
④
①
②
③
9102654
8.1V
2
1080P60
①
②
③
④
⑤
Device ID
WiFi Signal Strength
Fan Status Display
Battery Voltage Display
Channel Display
Video Format
⑥

QUICK GUIDE
ENTER MENU
7
Long press the wheel button for about 3 seconds to enter the root menu interface.
Push up or down the wheel button to switch the menu page, press down the wheel
button to confirm.
CHANNEL CHANGE
Push up or down the wheel button to change the channel at transmitter. Press down
the wheel button to confirm the channel.
IOS System and Android System Installation and Connection
1.“HollyView” APP Download
2.Enter the WiFi connection interface of the phone. Find the device’s WiFi (WiFi
names as “HLD+Device ID” ). Input WiFi password to connect (Factory default
password: 12345678). After the WiFi connection is successful, enter the APP to
monitor the screen.

8
Transmitter
PARAMETERS
Interface
HDMI Input (Type A Female)
HDMI Loop out (Type A Female)
USB Type-C
Supply Interface
USB Type-C Supply: 5V/2A
Battery Supply: 5-12V DC
Power Consumption
< 11W
Weight
136g
Deminsion
(L*W*H): 110*61*21mm
The battery plate excluded
Input / Output
Video Format
HDMI:
480p60
576p50
720p50/59.94/60
1080i50/59.94/60
1080p23.98/24/25/29.9/30
1080p50/59.94/60
Frequency
Modulation Mode
Transmission Power
Transmission Latency
Bandwidth
5GHz
OFDM
Maximum 21dBm
0.1s
20MHz


sales@Hollyland-tech.com
8F, 5D Building, Skyworth Innovation Valley, Tangtou, Shiyan, Baoan District Shenzhen, China.
Shenzhen Hollyland Technology Co,. Ltd
HollylandTech
HollylandTech
HollylandTech
www.hollyland-tech.com

