Zoyi ZT-703S
#1 in 50 to 99 MHzFull review
A very low-priced 3-in-1 at 50 MHz, a good first scope for repairs.
Amazon $89.99$89.99
The Zoyi ZT-703S is the better oscilloscope overall, rated 3.2 to 3.0. The Zoyi ZT-703S costs $10 less ($89.99 vs $99.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
FNIRSI 2C53T
#7 in 50 to 99 MHzFull review
A cheap 50 MHz handheld for car and bench repair that doubles as a multimeter. Pick it for basic signal checks, not for fast digital buses.
Amazon $99.99$99.99
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 50 to 99 mhz oscilloscope; a clear win is highlighted. How we rank explains each one.
| Factor weight | Zoyi ZT-703S | FNIRSI 2C53T |
|---|---|---|
| Overall rating | 3.2/5 | 3.0/5 |
| Value 30% | 65 $1.80 per MHz ($89.99, 50 MHz claimed) | 60 $2 per MHz ($99.99, 50 MHz claimed) |
| Bandwidth 20% | 45 50 MHz claimed bandwidth | 45 50 MHz claimed bandwidth |
| Sample rate 10% | 47 280 MSa/s sampling | 44 250 MSa/s sampling |
| Memory 10% | 50 memory depth not published (neutral score used) | 0 1 Kpts of memory |
| Features 20% | 50 built-in multimeter, signal generator, built-in battery | 50 built-in multimeter, signal generator, built-in battery |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Zoyi ZT-703S | FNIRSI 2C53T | |
|---|---|---|
| Scope | ||
| Claimed bandwidth | 50 MHz | 50 MHz |
| Sample rate | 280 MSa/s | 250 MSa/s |
| Channels | 2 | 2 |
| Memory depth | - | 1 Kpts |
| Max input voltage | - | 400 V |
| Serial decode | No | No |
| Extras | ||
| Multimeter | Yes, 19,999 counts | Yes, 19,999 counts |
| Signal generator | Yes | Yes, up to 50 kHz |
| Build | ||
| Type | Handheld | Handheld |
| Display | 3.5 in | 2.8 in |
| Touchscreen | - | No |
| Built-in battery | Yes, 3,400 mAh | Yes, 3,000 mAh |