








Hollyland Cosmo C1 [Official] 1000ft Wireless HDMI/SDI Video Transmission System
₹72,999.00 Original price was: ₹72,999.00.₹62,490.00Current price is: ₹62,490.00.
2 in stock
COSMO C1 uses the latest 5G wireless transmission technology. It can achieve ultra-low latency wireless video transmission (40ms). It has a transmission range of more than 300 meters with a clean line of sight (LOS) when the transmitter is connected to 1 receiver. And, both the transmitter and receiver are equipped with L-series battery plates and can also be powered by a USB Type-C port and a DC power input

Adaptive Frequency Hopping
HEVO, a seamless transmission technology empowered by adaptive frequency hopping (AFH), brings exceptional reliability, boosted signal strength, and superior anti-interference performance. Say goodbye to flickerings, pauses, and black screens throughout the production.
Traditional Wireless Systems

Cosmo C1 with HEVO
HEVO — Fast, Stable, and Smart
Seamless Channel Switch — You'll Never See It
HEVO completes synchronous frequency hopping in 0.001s at both the receiving and transmitting ends, ensuring picture integrity at the very instant of the frequency switch. In either the auto or the manual switch mode, your live streaming and production monitoring will no longer experience black screens.

Weight | 1.93 kg |
---|---|
Dimensions | 29 × 13.7 × 26.5 cm |
Brand |
HOLLYAND |
Order Processing
- Processing Time: Orders are processed within 1-2 business days. Please note that we do not process or ship orders on weekends or public holidays.
Shipping Rates & Delivery Estimates
- Standard Shipping:
- Delivery Time: 3-5 business days
- Shipping Cost: Free on orders above ₹1000
Shipment Confirmation & Tracking
- Order Confirmation: Once your order is processed and shipped, you will receive an email confirming the details of your order.
- Tracking Information: A tracking number will be provided within 24 hours of shipment, enabling you to monitor your order’s progress.
Shipping Restrictions
- We currently ship exclusively within India.
- Please note that we do not ship to P.O. boxes or APO/FPO addresses.
Delivery Delays
- Unforeseen Circumstances: Although we make every effort to deliver within the specified time frame, there may be delays due to unforeseen events such as adverse weather, courier service disruptions, or other external factors.
- Communication: In case of significant delays, we will notify you promptly and keep you updated on the status of your order.
Customs, Duties, and Taxes
SLT Retailers is not liable for any customs duties, taxes, or fees that may be applied during or after shipment. These charges are the responsibility of the customer.
Damaged, Lost, or Stolen Packages
- Damaged Goods: If you receive a damaged item, please contact us immediately with photographs of the damage. We will arrange for a replacement or refund as per your preference.
- Lost or Stolen Packages: We are not responsible for packages confirmed as delivered to the address provided. If a package is lost or stolen, we will verify the delivery details, including tracking information, and assist you with the investigation.
Return Policy
- We accept returns within 7 days from the date of delivery only if product is defective or damaged at the time of delivery.
- Please note: Returns will not be accepted for products that are damaged or broken. For accuracy, we request that you record a video while unboxing the product to verify its condition upon delivery.
- Once your return request is submitted, we will arrange a pick-up within 2-3 business days. A refund will be processed within 3-5 business days following the return.
- In certain regions, pick-up services may not be available. In such cases, you may choose to return the product via any courier service, with Speed Post being a preferred option.
Need Assistance?
For any questions regarding refunds or returns, please contact us at:
returns@sltretailers.com
Contact Information
For any inquiries regarding our shipping policy, please reach out to us:
- Email: contact@sltretailers.com
- Phone: +91-8287 2035 29
- Address: A/30, opposite, Sector 3, Vaishali, Ghaziabad, Uttar Pradesh 201010
- WIRELESS VIDEO TRANSMISSION REVOLUTION. COSMO C1 is equipped with Hollyland’s HEVO technology with Adaptive Frequency Hopping (AFH), Seamless Retransmitting and Simplified UVC Streaming, bringing you boosted signal strength and superior Anti-Interference performance. Fast, stable and smart video transmission in 5GHz frequency.
- UNNOTICEABLE CHANNEL SWITCHING. HEVO completes each synchronous frequency hopping in 0.001s with only 40ms ultra-low latency and up to 1,000ft line of sight (LOS) range. Whether in manual or auto-switching mode, your Electronic Field Production monitoring will no longer suffer from screen flickering or black screens in complex wireless environments.
- WIDE RANGE DEVICE COMPATIBILITY. Embedded with HEVO’s USB Video Capture (UVC) technology, it takes just one USB-C cable to push 1080P60 HD video to your computer for direct live streaming. COSMO C1 supports HDMI/SDI input, HDMI+SDI+UVC Output on RX, and SDI LOOPOUT on TX. It can work with any mainstream camera, monitor, and switcher.
- VERTICAL & HORIZONTAL MOUNTING. COSMO C1 comes with 1 Peasecod Pan-tilt with Cold Shoe and 1 extra Cold Shoe for you to mount freely. 2 mounting holes at the front panel allows installing the unit horizontally, ideal for evening out the weight to balance the setup on camera and stabilizer, while the 1/4"-20 threaded hole can mount the unit on any tripods.
- 3 POWER SUPPLY OPTIONS. As usual, COSMO C1 guarantees that you have nonstop power supply for different shooting scenarios. DC power supply is more suitable for indoor project, while L-series battery [NPF970/NPF750/NPF550] and USB-C port are perfect for your run and gun missions. Power indicator on screen and LED light in red reminds you 20 minutes in advance of a dying battery.
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