Quick Answer
The Jumper T15 is a 490g ELRS radio that packs a 3.5″ colour touchscreen, VS-M Hall gimbals, and a genuine 1W 2.4GHz ExpressLRS module into a body the size of a RadioMaster Boxer. At around £130 it sits between the Boxer Crush and the old TX16S class, and for most pilots it is the sweet spot: TX16S features without the TX16S bulk.
Why the T15 Exists (And Why We Stocked It)
Jumper took the T14 chassis and grafted on the T16's colour display. The result does what a full-size TX16S does, in a footprint closer to the Boxer. The TX16S class is heavy, wide, and overkill for pilots who only fly ELRS. The T15 trims the fat without losing the screen you actually want.
We brought it in because the mid-range slot was thin. The Boxer Crush is excellent but monochrome; the TX16S MKII is now archived by RadioMaster; and the Pocket class is too small for long sessions. The T15 slots neatly into that gap at around £130, in six colours.
The 1W ELRS Module and Why the Cooling Fan Matters
The internal module is ExpressLRS 2.4GHz, capped at a real 1W (Oscar Liang's bench measured 1.04W sustained after 20 minutes). That headroom is not for parking-lot bando. It is for pushing through trees at a long-range meet, or holding a link when you fly low behind a ridgeline. The cooling fan on the back exists because 1W into a compact module cooks itself otherwise; without it you get thermal throttling and the radio silently drops to a lower tier.
The T15 does not have Gemini (dual-band) on the internal module. If you want Gemini you either move to a RadioMaster Gemini radio or drop a Gemini-capable external module into the JR bay. For UK long-range on 868MHz instead of 2.4GHz, the bay also takes an ES900TX 868MHz module. Most pilots will never need either; the internal 1W is plenty.
Gimbals, Switches, and How It Actually Feels
Out of the box it runs VS-M Hall sensor gimbals, the same class used in the Boxer. They are smooth, centre well, and outlast the radio. Jumper offers an RDC90 upgrade for around £30, but in our workshop back-to-back we could not feel a meaningful difference. Save the money.
Switch layout mirrors the Boxer: four front switches, two centre pots, and convertible shoulder buttons you can swap for stick-style switches. The six backlit flight-mode buttons double as a battery level indicator when charging. The one ergonomic miss versus the Boxer is that the front switches sit further back, so thumb pilots stretch a bit more. You adapt in a session.
Battery, Charging, and the No-SD-Card Trick
The T15 takes two 21700 cells (not included) and accepts 18650s if you bend the contacts. We measure around 8 hours at 25mW and 4 hours flat-out at 1W with 21700s, which covers a full flying day. USB-C charging hits 10W, so flat 4500mAh cells top up in 4–5 hours from a 5V/2A adapter.
Internally there is 2GB of flash instead of a microSD card, which means one less thing to lose at the field. Model images, audio, and EdgeTX backups all live on-board. The radio ships with EdgeTX 2.10 and ELRS 3.3.2, flashable to 3.4.2 through the standard configurator.
Who Should Buy the T15
Buy it if you want a full-colour ELRS radio under £130, you fly 5-inch or cinewhoop, and you value screen real estate over pocketability. It is the radio we hand people moving up from a Pocket Crush who are not ready for TX16S bulk.
Skip it if you only fly 75mm whoops indoors, you need Gemini dual-band out of the box, or you fly multi-protocol and need a 4-in-1 internal module. The T15 is ELRS-only inside; for everything else there is the JR bay. For context, see our transmitter buying guide, Boxer comparison, and primer on why ELRS is the FPV standard.
FAQ
Q: Does the Jumper T15 support Gemini / dual-band ELRS?
A: Not on the internal module. The internal RF is 2.4GHz ELRS only. You can add a Gemini-capable module (like the BetaFPV SuperG) in the external JR bay if you need dual-band.
Q: What batteries does the Jumper T15 take?
A: Two 21700 Li-ion cells (not included). It also accepts 18650 cells if you bend the contacts, or a 2S LiPo that fits the bay. Browse compatible packs in our radios collection.
Q: Is the T15 better than the RadioMaster Boxer?
A: Different brief. The T15 gives you a colour touchscreen, 1W output, and a JR module bay for about £20 more. The Boxer has a metal scroll wheel, slightly better switch reach, and a more premium feel. For most pilots chasing the screen and the wattage, the T15 wins. See both in our radio controllers collection.