DarwinFPV Cement Ultra-Durable 5.8G 2.5W Waterproof VTX
Of the 81 other 5.8 GHz analog video transmitters in our database, 61 have a lower maximum power than the Cement Ultra-Durable 5.8G 2.5W Waterproof VTX (2500 mW, 34 dBm), 10 the same and 10 a higher one; the class median is 800 mW. The Cement Ultra-Durable 5.8G 2.5W Waterproof VTX steps through 200 / 800 / 1000 / 2500 mW, which is 23 / 29 / 30 / 34 dBm: the top level is 11 dB above the lowest, about 3.5x the free-space range on the same antennas.
| System | analog |
|---|---|
| Max power | 2500 mW |
| Power levels | 200 / 800 / 1000 / 2500 mW |
| Frequency range | 5.8 GHz |
| Input voltage | 7-33V |
| Power draw | 900 mA at 10 V (2.5 W output) |
| Mounting | 20x20mm M2 |
| Channels | 40 |
| Antenna connector | MMCX |
| Weight | 21.8 g |
| Price (approx.) | 49.99 USD |
Choosing between systems? See analog vs DJI vs Walksnail vs HDZero.
Where this data comes from
Read 2026-09-24 off DarwinFPV's own shop. Unlike the 1000 mW Cement beside it this page has no spec block at all - it is prose plus a packing list - so only two fields could be filled. max_power_mw is the brand's own sentence, 'features a powerful 2500mW output, offering strong penetration and stable transmission', restated by the title and by the first feature line ('2500mW High Power Output'); it is output power in milliwatts, and DarwinFPV states no EIRP or dBm figure anywhere on the page. weight_g 21.8 is read at full resolution off the brand's own photograph of the module on a scale (image 5 of 6, a 0.1 g pocket scale with the Chinese unit legend), which is the only weight DarwinFPV publishes for this part; no other unit is physically possible for a part this size. input_voltage is deliberately empty although the case is silkscreened with it: the label reads '7-__V' with the digits hidden behind the connector in the only photograph that shows that face. mount_mm, channels and antenna_connector are empty for want of any statement - the packing list's 'MMCX pigtail antenna (140mm)' describes what is in the box, which is the props' 'for T-mount builds' rule one class over. Stated in prose and not fielded: aluminium CNC housing with an active fan, IP67 to 0.5 m for 30 minutes, two-stage filtering, reverse-polarity/surge/over-temperature protection, SmartAudio. power_draw is the maker's own supply figure, 'Current: 10V/[email protected]' in DarwinFPV's Specifications table image (Specifications_cecba17b...jpg, 2400 px wide), read 2026-10-20 at native resolution off the listing's spec-sheet image (Shopify CDN through common.UA, listed by scraper/propose_vtx_power_draw.py --images); it is the VTX's input draw, not its RF output. Re-read 2026-10-20 (burst 210), same image: its labelled rows fill what the prose left empty - 'Output power: 200mW/800mW/1W/2.5W' (power_levels_mw), 'Input power: DC 7-33V' (input_voltage; the case label's hidden digits are 33), 'Output frequency: 40CH(A-B-E-F-R)' (channels), 'Antenna interface: MMCX', 'Installation hole position: 20x20mm (M2)' (mount_mm), 'Dimensions: 32x28.5x15mm (including the fan)', 'Weight(without the antenna): 21.8±2g' (agrees with the scale photograph). The sheet names the five bands but prints no frequency, so frequency_range keeps the 5.8 GHz label: a span from the standard band plan would be our figure, not DarwinFPV's.