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 rates 3.2 among 50 to 99 mhz oscilloscopes; the OWON HDS242S rates 2.8 among under 50 mhz ones. The Zoyi ZT-703S costs $65.01 less ($89.99 vs $155).
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.
OWON HDS242S
#2 in Under 50 MHzFull review
A 40 MHz 3-in-1 handheld from a known scope maker, for repair and field checks.
Amazon $155$155
Scores side by side
These two sit in different bandwidth classes (50 to 99 mhz and under 50 mhz), and each is scored against the reference points for its own class, so a rating says how well each does among its own bandwidth peers. How we rank explains each factor.
| Factor weight | Zoyi ZT-703S | OWON HDS242S |
|---|---|---|
| Overall rating | 3.2/5 | 2.8/5 |
| Value 30% | 65 $1.80 per MHz ($89.99, 50 MHz claimed) | 31 $3.88 per MHz ($155, 40 MHz claimed) |
| Bandwidth 20% | 45 50 MHz claimed bandwidth | 39 40 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) | 50 memory depth not published (neutral score used) |
| 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 | OWON HDS242S | |
|---|---|---|
| Scope | ||
| Claimed bandwidth | 50 MHz | 40 MHz |
| Sample rate | 280 MSa/s | 250 MSa/s |
| Channels | 2 | 2 |
| Serial decode | No | No |
| Extras | ||
| Multimeter | Yes, 19,999 counts | Yes, 20,000 counts |
| Signal generator | Yes | Yes |
| Build | ||
| Type | Handheld | Handheld |
| Display | 3.5 in | 3.5 in |
| Built-in battery | Yes, 3,400 mAh | Yes, 4,400 mAh |