b4limits.com and sis.ag are both overseas hardware and are often compared head-to-head. This page lines them up item by item — rating, price, China accessibility, HQ, payments and refund policy — and ends with practical "which to pick" guidance.
On balance, b4limits.com comes out slightly ahead — it offers Higher overall rating (6.0 vs 5.0). That said, sis.ag has its strengths too: Better mainland China accessibility. If that matters more to you, sis.ag is well worth considering.
| Comparison | b4limits.com | sis.ag |
|---|---|---|
| Category | 📦 hardware 射频安防设备 |
📦 hardware 射频安防设备 |
| Overall rating | 6.0/10 | 5.0/10 |
| Monthly price | N/A | N/A |
| Yearly price | — | — |
| China access | Unknown | ★☆☆ Partial (proxy needed) |
| HQ | Unknown | Germany |
| Network | — | — |
| Payment methods | — | — |
| Refund guarantee | — | — |
| Editor notes | 反无人机/通信压制硬件，专业门槛高。 |
提供车辆筛查、干扰器等专业安防设备。 |
| Data source | In-depth review | In-depth review |
The guidance above is auto-compiled by TG4G from public data and is not purchase advice. Always rely on the official site and your own testing. A green cell marks the better value on that dimension (higher rating / CN / refund, or lower price). Some links are affiliate links (rel="sponsored nofollow").
If you want all-round balance and reputation, choose b4limits.com; if your core need happens to be sis.ag's strength (Better mainland China accessibility), then sis.ag is the better fit. Either way, trial the cheapest plan for a week before committing long-term.
This page is a side-by-side reference, not purchase advice; prices and policies are per the official sites, and some links are affiliate.