Thikpo SMT108D
A low-cost digital-gauge machine for occasional DIY use. Its run-time limit makes it a poor fit for a busy shop.
Amazon $63.64$63.64
The Thikpo SMT108D is the better automotive smoke machine overall, rated 3.6 to 3.5. The Thikpo SMT108D leads on value and features. The Witelida WA-SM-SH02 wins on measurement. The Thikpo SMT108D costs $46.35 less ($63.64 vs $109.99).
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.
Witelida WA-SM-SH02
A gauge-and-flow-meter machine for vacuum and intake leaks. The listing gives no warranty.
Amazon $109.99$109.99
Which should you buy?
- Choose the Thikpo SMT108D for value ($63.64 vs $109.99) and features (built-in air pump, air-only mode, fluid included vs built-in air pump, air-only mode).
- Choose the Witelida WA-SM-SH02 for measurement (pressure gauge, flow meter vs digital pressure display).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every no EVAP mode stated automotive smoke machine; a clear win is highlighted. How we rank explains each one.
| Factor weight | Thikpo SMT108D | Witelida WA-SM-SH02 |
|---|---|---|
| Overall rating | 3.6/5 | 3.5/5 |
| Value 30% | 90 $63.64 | 68 $109.99 |
| Pressure coverage 25% | 50 pressure not published (neutral score used) | 50 up to 20 PSI |
| Measurement 20% | 60 digital pressure display | 80 pressure gauge, flow meter |
| Features 15% | 65 built-in air pump, air-only mode, fluid included | 50 built-in air pump, air-only mode |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Thikpo SMT108D | Witelida WA-SM-SH02 | |
|---|---|---|
| Pressure and smoke | ||
| Output pressure | - | 20 PSI |
| Smoke output | 30 L/min | - |
| Pressure display | Digital | Gauge |
| Flow meter | - | Yes |
| Air-only mode | Yes | Yes |
| Power and fluid | ||
| Air source | Built-in pump | Built-in pump |
| Fluid included | Yes | - |