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RS20-0800M2T1SDAUHC cannot directly replace RS20-0800M2T1TDAUWVV.
There are critical differences in software functions, protection level and certifications between the two models. Direct replacement will result in failure to meet the core requirements of the original application.
- Key Differences Comparison
| รายการ | Original Model RS20-0800M2T1TDAUWVV | Replacement Model RS20-0800M2T1SDAUHC | Impact |
| Software Level | TDA (Layer 2 Enhanced Management) | SDA (Layer 2 Basic Management) | Key functions such as VLAN, IGMP snooping, HIPER-Ring/MRP ring redundancy, RSTP/MSTP are missing, greatly reducing network reliability and manageability |
| Special Protection | WVV (การเคลือบตามแบบ) | HC (High protection/dustproof, typically IP65/IP67 or dedicated dust rating) | Different coating types: WVV focuses on moisture and corrosion resistance, while HC focuses on dust protection; they are not fully equivalent |
| Hazardous Location Certification | Class I Div 2 (suffix A) | Not certified | Not suitable for flammable and explosive hazardous areas such as petrochemical and mining sites |
| อุณหภูมิในการทำงาน | -40…+70°C (wide temperature range) | Normally 0…+60°C (standard temperature) | Cannot adapt to extreme temperature environments such as outdoor and vehicle-mounted applications |
- Replacement Recommendations
For a full replacement, select a model with matching functions, protection and certifications. Priority recommendations:
RS20-0800M2T1TDAUWVV (identical model, ensures all specifications match)
If uplink ports need adjustment, choose models in the same series with enhanced management, wide temperature and conformal coating, เช่น:
RS20-0800S2T1TDAUWVV (single-mode fiber instead of multimode)
RS20-0800M2M2TDAUWVV (dual fiber uplinks)
- หมายเหตุการเลือก
Before replacement, confirm the mandatory requirements for ring redundancy, hazardous location certification and wide temperature range on site.
If only basic connectivity is required without ring network or hazardous area needs, RS20-0800M2T1SDAUHC may be considered, but network design and environmental compliance must be re-evaluated.
The core attributes of RS20-0800M2T1TDAUWVV are:
8 ports, Layer 2 enhanced management (TDA), 1 multimode fiber + 1 copper uplink, wide temperature (-40องศาเซลเซียส), Class I Div 2 approval, WVV conformal coating.
Below is a precise list of alternatives in four categories: direct equivalent, function downgrade, port variant, cross-series upgrade (sorted by recommendation).
- Direct Equivalent Replacements in the Same Series (1:1, risk-free)
- Identical Standard Model (ตัวเลือกแรก)
RS20-0800M2T1TDAUWVV
หมายเลขคำสั่งซื้อ: 943434-365
Matches: TDA enhanced + U wide temp + A hazardous location + WVV coating
- Similar Specs, Minor Coating/Certification Adjustment (ตัวเลือกที่สอง)
RS20-0800M2T1TDAUHC
ความแตกต่าง: HC dustproof replaces WVV conformal coating; no Class I Div 2 การรับรอง
แอปพลิเคชัน: Non-hazardous areas, high dust, moderate humidity
หมายเลขคำสั่งซื้อ: 943434-265HC
RS20-0800M2T1TDAU
ความแตกต่าง: No WVV coating, no Class I Div 2 การรับรอง
แอปพลิเคชัน: General wide-temperature industrial environments
หมายเลขคำสั่งซื้อ: 943434-165
- Port Variant Replacements in the Same Series (Different uplinks, otherwise identical)
- Dual Copper Uplinks (No Fiber)
RS20-0800T1T1TDAUWVV
Uplink: 2×RJ45 copper ports
หมายเลขคำสั่งซื้อ: 943434-375
- Dual Multimode Fiber Uplinks (No Copper)
RS20-0800M2M2TDAUWVV
Uplink: 2×M2 multimode SC fiber ports
หมายเลขคำสั่งซื้อ: 943434-385
- Single-Mode Fiber (Long Distance)
RS20-0800S2T1TDAUWVV
Uplink: 1×S2 single-mode SC fiber port + 1×T1 copper port
หมายเลขคำสั่งซื้อ: 943434-395
- Function-Downgraded Replacements in the Same Series (Cost/stock compromise)
- Basic Management (SDA)
RS20-0800M2T1SDAUWVV
Software: SDA Basic (no ring/VLAN/IGMP)
หมายเลขคำสั่งซื้อ: 943434-364
- Standard Temperature (อี)
RS20-0800M2T1TDAEWVV
อุณหภูมิ: 0~60°ซ (non-wide temperature)
หมายเลขคำสั่งซื้อ: 943434-065WVV
- Basic Management + Standard Temperature
RS20-0800M2T1SDAEWVV
หมายเลขคำสั่งซื้อ: 943434-064WVV
- Cross-Series Upgrade Replacements (RS20 discontinued/upgrade)
- RS32 Series (with Gigabit, ที่แนะนำ)
RS32-0800M2T1TDAUWVV
8×FE + 2×Gigabit SFP, Layer 2 enhanced, wide temp, hazardous location certified, coated
Compatible with RS20 configuration, dimensions and power supply
- MICE/SPIDER Series (compact/unmanaged)
MS20-0800M2T1TDAUWVV (modular)
SPIDER 8TX/1FX M2 TD AU WVV (ไม่มีการจัดการ)
- Quick Risk Assessment (Critical Items Must Match)
✅ Must match: TDA enhanced, U wide temp, A hazardous location, WVV coating
⚠️ Downgrade risks:
SDA → loss of ring network/VLAN/IGMP
E → not suitable for -40°C environments
No A → prohibited in petrochemical/mining hazardous areas
No WVV → prone to failure in high humidity/corrosive conditions
- Final Selection Advice
- 1:1 replacement → RS20-0800M2T1TDAUWVV (943434-365)
- No explosion protection / high dust → RS20-0800M2T1TDAUHC
- Long-distance fiber → RS20-0800S2T1TDAUWVV
- Gigabit upgrade → RS32-0800M2T1TDAUWVV
