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
The OWON HDS242S is the better oscilloscope overall, rated 2.8 to 2.0. The OWON HDS242S leads on value, bandwidth and sample rate. The FNIRSI 2C23T Plus costs $79.01 less ($75.99 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.
FNIRSI 2C23T Plus
#4 in Under 50 MHzFull review
An entry-level 10 MHz scope-multimeter for car sensors, audio and low-speed circuits.
Amazon $75.99$75.99
Which should you buy?
- Choose the OWON HDS242S for value ($3.88 per MHz ($155, 40 MHz claimed) vs $7.60 per MHz ($75.99, 10 MHz claimed)), bandwidth (40 MHz claimed bandwidth vs 10 MHz claimed bandwidth) and sample rate (250 MSa/s sampling vs 50 MSa/s sampling).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 50 mhz oscilloscope; a clear win is highlighted. How we rank explains each one.
| Factor weight | OWON HDS242S | FNIRSI 2C23T Plus |
|---|---|---|
| Overall rating | 2.8/5 | 2.0/5 |
| Value 30% | 31 $3.88 per MHz ($155, 40 MHz claimed) | 2 $7.60 per MHz ($75.99, 10 MHz claimed) |
| Bandwidth 20% | 39 40 MHz claimed bandwidth | 0 10 MHz claimed bandwidth |
| Sample rate 10% | 44 250 MSa/s sampling | 0 50 MSa/s sampling |
| Memory 10% | 50 memory depth not published (neutral score used) | 32 32 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
| OWON HDS242S | FNIRSI 2C23T Plus | |
|---|---|---|
| Scope | ||
| Claimed bandwidth | 40 MHz | 10 MHz |
| Sample rate | 250 MSa/s | 50 MSa/s |
| Channels | 2 | 2 |
| Memory depth | - | 32 Kpts |
| Max input voltage | - | 400 V |
| Serial decode | No | No |
| Extras | ||
| Multimeter | Yes, 20,000 counts | Yes, 9,999 counts |
| Signal generator | Yes | Yes, up to 2 MHz |
| Build | ||
| Type | Handheld | Handheld |
| Display | 3.5 in | 2.8 in |
| Touchscreen | - | No |
| Built-in battery | Yes, 4,400 mAh | Yes, 3,000 mAh |