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Description
STBDDO3705Main Range of product Modicon STB distributed I O solution Product or component type Basic digital output module Discrete output number 16 Discrete output type Solid state Discrete output voltage 24 V Discrete output voltage type DC Complementary Discrete output current 500 mA Discrete output logic Positive Output voltage 19. 2 30 V DC Absolute maximum voltage 35 V 1. 3 ms Response time 2 ms off to on 2 ms on to off Cold swapping Yes Hot swapping No
Main
| Range of product | Modicon STB distributed I/O solution |
| Product or component type | Basic digital output module |
| Discrete output number | 16 |
| Discrete output type | Solid state |
| Discrete output voltage | 24 V |
| Discrete output voltage type | DC |
Complementary
| Discrete output current | 500 mA |
| Discrete output logic | Positive |
| Output voltage | 19.2...30 V DC |
| Absolute maximum voltage | 35 V 1.3 ms |
| Response time | 2 ms off-to-on 2 ms on-to-off |
| Cold swapping | Yes |
| Hot swapping | No for basic NIMs |
| Protection type | Power protection integrated fuse on PDM time lag 5 A Reverse polarity protection Short-circuit protection Thermal overload protection |
| Insulation between channels and logic bus | 1500 V for 1 minute |
| Maximum leakage current | 0.4 mA at state 0 30 V |
| Maximum load capacitance | 10 µF |
| Maximum load inductance | 1000 mH at 4 Hz |
| Reset | Manual reset COM fault |
| Product compatibility | Power distribution module STBPDT3100/3105 I/O base STBXBA3000 |
| [Us] rated supply voltage | 24 V DC |
| Supply | Power distribution module |
| Current consumption | 135 mA at 5 V DC for logic bus |
| Marking | CE |
| Overvoltage category | II |
| Status LED | 1 LED (green)module status (RDY): 1 LED per channel (green)channel status (OUT1 to OUT16): |
| Height | 13.9 mm |
| Depth | 70 mm |
| Width | 128.3 mm |
| Net weight | 0.086 kg |
Environment
| Standards | EN/IEC 61131-2 |
| Product certifications | UL CSA FM Class 1 Division 2 |
| Pollution degree | 2 conforming to IEC 60664-1 |
| Operating altitude | <= 2000 m |
| IP degree of protection | IP20 conforming to EN 61131-2 class 1 |
| Ambient air temperature for operation | 0…60 °C (without) |
| Ambient air temperature for operation | 32...140 °F without |
| Ambient air temperature for storage | -40…85 °C without |
| Ambient air temperature for storage | -40...185 °F without |
| Relative humidity | 95 % at 60 °C without condensation |
| Vibration resistance | 3 gn at 58…150 Hz on 35 x 7.5 mm symmetrical DIN rail 5 gn at 58…150 Hz on 35 x 15 mm symmetrical DIN rail +/-0.35 mm at 10…58 Hz |
| Shock resistance | 30 gn for 11 ms conforming to IEC 88 reference 2-27 |
Offer Sustainability
| Sustainable offer status | Green Premium product |
| REACh Regulation | REACh Declaration |
| EU RoHS Directive | Pro-active compliance (Product out of EU RoHS legal scope) EU RoHS Declaration |
| Mercury free | Yes |
| RoHS exemption information | Yes |
| China RoHS Regulation | China RoHS declaration |
| Environmental Disclosure | Product Environmental Profile |
| Circularity Profile | End of Life Information |
| WEEE | The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins |
Contractual warranty
| Warranty | 18 months |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1057 reviews
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Product Reviews
★★★★★ 5
Great product, affordable price
Size: 1 Fl Oz (Pack of 1)
I’ve tried a lot of hyaluronic acid serums over the years, and honestly, this one surprised me. The Ordinary Hyaluronic Acid 2% + B5 leaves my skin feeling soft, hydrated, and plump without feeling greasy or heavy. As someone in my 50s, I really appreciate products that hydrate without making fine lines look worse, and this one layers beautifully under moisturizer and makeup.
What makes it even better is the price. It’s incredibly affordable compared to other high-end hydrating serums that cost 3–4 times as much. You truly get amazing quality for the money.
My skin feels smoother, looks healthier, and stays hydrated throughout the day. I will definitely keep repurchasing this product and highly recommend it for anyone wanting affordable, effective skincare.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Hydrating, Simple, and Great Everyday Serum
Size: 1 Fl Oz (Pack of 1)
I’m giving The Ordinary Hyaluronic Acid 2% + B5 5 stars because it’s such a good, simple hydration serum.
It makes my skin feel noticeably more hydrated and plump, especially when I use it on slightly damp skin. I also like that it layers easily with my other skincare and doesn’t feel sticky or heavy.
Overall, it’s an affordable, effective product that I can use every day and always feel good about.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Hydrating Serum That Leaves Skin Smooth and Plump
Size: 1 Fl Oz (Pack of 1)
This serum feels really hydrating and helps my skin look smoother and more refreshed. It absorbs nicely without feeling too heavy, and my skin feels softer and more moisturized after using it consistently.
I also like that it includes ceramides and vitamin B5, which help support the skin barrier while adding hydration. It layers well with other skincare products and works great for both day and night routines. Overall, a great affordable serum for keeping skin hydrated and healthy-looking!
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Affordable and Lightweight Hyaluronic Acid Serum
Size: 1 Fl Oz (Pack of 1), Size: 1 Fl Oz (Pack of 1)
I absolutely love The Ordinary brand and own quite a few of their skincare products, so I was excited to add this hyaluronic acid serum to my routine. I use it after cleansing my face and before applying moisturizer, and it layers really nicely with the rest of my skincare. One of the things I appreciate most about this product is the packaging. The glass bottle feels high-quality, and the dropper makes application easy and convenient.
The serum itself is very lightweight, and a little bit goes a long way, so the bottle should last quite a while. It absorbs nicely into the skin without feeling greasy or sticky afterward. I also really appreciate the clean ingredients and the fact that there are no added perfumes or strong scents, which is important for my sensitive skin and overall preference for non-irritating skincare products.
As with most skincare products, I know it takes consistency and several months of use before you can truly judge long-term results and improvements in your skin. Because of that, I cannot fully speak yet on how effective it is overall, but so far I have been enjoying using it and have had no irritation or issues. For the affordable price point and quality ingredients, I think this is a great skincare product, and I plan to continue using it and update my review later on with long-term results.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
The Ordinary Hyaluronic Acid 2% + B5 (with Ceramides)
Size: 1 Fl Oz (Pack of 1)
The Ordinary’s Hyaluronic Acid 2% + B5 with added ceramides is a hydration powerhouse that delivers noticeable moisture and placid comfort to dry, dehydrated, or combination skin. Hyaluronic acid draws water into the skin’s surface layers, helping skin feel plump, soft, and smooth, while vitamin B5 supports enhanced surface hydration and recovery.
Adding ceramides is a smart touch because they help reinforce the skin barrier, locking in moisture and preventing water loss throughout the day. The result is a formula that doesn’t just sit on the surface — it helps improve the skin’s resilience over time.
The texture is lightweight and gel-like, absorbing quickly without leaving a sticky or heavy feel, making it easy to layer under serums, moisturizers, and sunscreen. It works beautifully in both morning and evening routines.
After consistent use, many users notice better overall hydration, smoother fine lines caused by dryness, and a more comfortable complexion — especially during dry seasons or in air-conditioned environments.
Pros:
✔ Deep hydration that lasts
✔ Lightweight and fast-absorbing
✔ Great paired with other products (moisturizers / creams)
✔ Ceramides help support the skin barrier
Cons:
✖ Not a direct treatment for acne or pigmentation
✖ Effects build gradually with consistent use
Overall: A very effective and versatile hydrator that’s easy to use and works well for most skin types. Particularly great if you want lasting moisture and a smoother, healthier-feeling complexion.
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Reviewed in the United States on January 27, 2026