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Key Features
Add up to 1080p60 wireless video transmission to your gimbal, mirrorless, or DSLR camera rig using the lightweight Mars 400S PRO II SDI/HDMI Wireless Video Transmission System from Hollyland. The transmitter provides HDMI and SDI inputs, and the receiver offers SDI and HDMI outputs. It features an extremely low 70 ms latency and a high 12 Mb/s data rate with line-of-sight transmission up to 500' to the receiver and to the Hollyview Wi-Fi app. For a strong line-of-sight signal, the system includes two external antennas on the transmitter and two on the receiver, and one is included as a spare.
The Mars 400S Pro II is a powerful video transmission system that offers a transmission range of up to 500' and achieves a low latency of just 70ms. The Mars 400S Pro II is equipped with SDI and HDMI interfaces, supports multi-receiver setups, and allows monitoring through the HollyView App.
The system supports a high 12 Mb/s data rate, enabling high-definition video transmission and delivering clear, refined image quality with rich details.
The Mars 400S Pro II raises the bar with a very low latency of just 70ms. It outperforms Mars 400S Pro by reducing latency by 30% and providing a stable signal transmission range of up to 500'. This ensures high-definition image quality and an immersive low-latency experience. It is also compatible with Mars 400S Pro, allowing them to be paired and used together.
Equipped with both SDI and HDMI interfaces, the Mars 400S Pro II provides enhanced device compatibility and convenient connections to various types of equipment. Whether it's a DSLR or professional film camera, the Mars 400S Pro II can fulfill your connectivity requirements.
Upon startup, Mars 400S Pro II automatically selects the best frequency channels. Manual channel scanning can be conducted using the receiver or the HollyView App, providing a visual representation of signal interference levels at each frequency. The app allows you to install optional channel-scanning firmware, enabling you to easily find the strongest transmission signals.
The Mars 400S Pro II offers flexible solutions to meet monitoring needs, including team collaboration, multi-crew monitoring, and multi-member cooperation. Using the Hollyview app for iOS or Android, you can monitor your video transmission in real time via a Wi-Fi connection as well as live stream directly from the receiver via your computer using a USB-C adapter. The transmitter can simultaneously transmit to up to one receiver and two apps, or to a total of four apps without the receiver.
Each Mars 400S Pro II unit is equipped with a three-speed fan adjustment feature (Auto, Low Speed, Off). Its intelligent cooling design allows it to perform optimally in various usage scenarios by reducing device temperature and ensuring stable signal transmission.
Integrated with a shoe adapter featuring a 1/4"-20 screw simplifies the installation process. Simply connect the shoe adapter of the Mars 400S Pro II to a cold shoe slot on your camera or cage without the need for any cumbersome additional installation steps.
In the Box
Key Specs
| Video I/O | Transmitter: 1 x HDMI Input Show More |
| Embedded Audio | HDMI/SDI |
| Latency | 70 ms |
| Video Format | HDMI/SDI |
| Battery Type | Transmitter/Receiver: 1 x L-Series |
| Power Consumption | Transmitter: 11 W |
Inputs / Outputs
| Antenna I/O | Transmitter/Receiver: 2 x RP-SMA |
| Video I/O | Transmitter: 1 x HDMI Input |
| Embedded Audio | HDMI/SDI |
| Audio I/O | No |
| Power | Transmitter/Receiver: 1 x Barrel (5 VDC) Input |
| Encryption | No |
Wireless
| Wireless Range | 500' / 152.4 m (Line-of-Sight) |
| Channel Bandwidth | 20 MHz |
| Frequency Range | US: 5 GHz |
| Latency | 70 ms |
| RF Power | < 21 dBm |
| RF Sensitivity | -80 dBm |
| Bluetooth | No |
| Mobile App Compatible | Yes: Android & iOS |
| Cellular Support | No |
Format Support
| Video Format | HDMI/SDI |
Power
| DC Input Power | 6 to 16 VDC |
| Battery Type | Transmitter/Receiver: 1 x L-Series |
| Power Consumption | Transmitter: 11 W |
Environmental
| Environmental Protection | No |
| Certifications | No |
General
| Dimensions | Transmitter/Receiver: 4.3 x 2.8 x 1.3" / 110 x 72 x 33.5 mm |
| Weight | Transmitter/Receiver: 7.3 oz / 206 g |
Packaging Info
| Package Weight | 1.955 lb |
| Box Dimensions (LxWxH) | 8 x 5.7 x 3.6" |