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Description
SR2B121BDMain Range of product Zelio Logic Product or component type Compact smart relay Complementary Local display With Number or control scheme lines 0240 with ladder programming 0500 with FBD programming Cycle time 690 ms Backup time 10 years at 25 C Clock drift 12 min year at 055 C 6 s month at 25 C Checks Program memory on each power up [Us] rated supply voltage 24 V DC Supply voltage limits 19. 230 V Maximum supply current 100 mA (without extension)
Main
| Range of product | Zelio Logic |
| Product or component type | Compact smart relay |
Complementary
| Local display | With |
| Number or control scheme lines | 0…240 with ladder programming 0…500 with FBD programming |
| Cycle time | 6…90 ms |
| Backup time | 10 years at 25 °C |
| Clock drift | 12 min/year at 0…55 °C 6 s/month at 25 °C |
| Checks | Program memory on each power up |
| [Us] rated supply voltage | 24 V DC |
| Supply voltage limits | 19.2…30 V |
| Maximum supply current | 100 mA (without extension) |
| Power dissipation in W | 3 W without extension |
| Reverse polarity protection | With |
| Discrete input number | 8 conforming to EN/IEC 61131-2 type 1 |
| Discrete input type | Resistive |
| Discrete input voltage | 24 V DC |
| Discrete input current | 4 mA |
| Counting frequency | 1 kHz for discrete input |
| Voltage state 1 guaranteed | >= 15 V for I1...IA and IH...IR discrete input circuit >= 15 V for IB...IG used as discrete input circuit |
| Voltage state 0 guaranteed | <= 5 V for I1...IA and IH...IR discrete input circuit <= 5 V for IB...IG used as discrete input circuit |
| Current state 1 guaranteed | >= 1.2 mA (IB...IG used as discrete input circuit) >= 2.2 mA (I1...IA and IH...IR discrete input circuit) |
| Current state 0 guaranteed | <= 0.5 mA (IB...IG used as discrete input circuit) <= 0.75 mA (I1...IA and IH...IR discrete input circuit) |
| Input compatibility | 3-wire proximity sensors PNP for discrete input |
| Analogue input number | 4 |
| Analogue input type | Common mode |
| Analogue input range | 0...10 V 0...24 V |
| Maximum permissible voltage | 30 V for analogue input circuit |
| Analogue input resolution | 8 bits |
| LSB value | 39 mV for analogue input circuit |
| Conversion time | Smart relay cycle time for analogue input circuit |
| Conversion error | +/- 5 % at 25 °C for analogue input circuit +/- 6.2 % at 55 °C for analogue input circuit |
| Repeat accuracy | +/- 2 % at 55 °C for analogue input circuit |
| Operating distance | 10 m between stations, with screened cable (sensor not isolated) for analogue input circuit |
| Input impedance | 12 kOhm for IB...IG used as analogue input circuit 12 kOhm for IB...IG used as discrete input circuit 7.4 kOhm for I1...IA and IH...IR discrete input circuit |
| Number of outputs | 4 relay |
| Output voltage limits | 24...250 V AC (relay output) 5...30 V DC (relay output) |
| Contacts type and composition | NO for relay output |
| Output thermal current | 8 A for all 4 outputs for relay output |
| Electrical durability | AC-12: 500000 cycles at 230 V, 1.5 A for relay output conforming to EN/IEC 60947-5-1 AC-15: 500000 cycles at 230 V, 0.9 A for relay output conforming to EN/IEC 60947-5-1 DC-12: 500000 cycles at 24 V, 1.5 A for relay output conforming to EN/IEC 60947-5-1 DC-13: 500000 cycles at 24 V, 0.6 A for relay output conforming to EN/IEC 60947-5-1 |
| Switching capacity in mA | >= 10 mA at 12 V (relay output) |
| Operating rate in Hz | 0.1 Hz (at Ie) for relay output 10 Hz (no load) for relay output |
| Mechanical durability | 10000000 cycles for relay output |
| [Uimp] rated impulse withstand voltage | 4 kV EN/IEC 60947-1 and EN/IEC 60664-1 |
| Clock | With |
| Response time | 10 ms (from state 0 to state 1) for relay output 5 ms (from state 1 to state 0) for relay output |
| Connections - terminals | Screw terminals, 1 x 0.2...1 x 2.5 mm² (AWG 25...AWG 14) semi-solid Screw terminals, 1 x 0.2...1 x 2.5 mm² (AWG 25...AWG 14) solid Screw terminals, 1 x 0.25...1 x 2.5 mm² (AWG 24...AWG 14) flexible with cable end Screw terminals, 2 x 0.2...2 x 1.5 mm² (AWG 24...AWG 16) solid Screw terminals, 2 x 0.25...2 x 0.75 mm² (AWG 24...AWG 18) flexible with cable end |
| Tightening torque | 0.5 N.m |
| Overvoltage category | III conforming to EN/IEC 60664-1 |
| Net weight | 0.25 kg |
Environment
| Immunity to microbreaks | 1 ms |
| Product certifications | GL CSA UL GOST C-Tick |
| Standards | EN/IEC 61000-4-12 EN/IEC 61000-4-4 level 3 EN/IEC 61000-4-5 EN/IEC 61000-4-11 EN/IEC 61000-4-2 level 3 EN/IEC 60068-2-6 Fc EN/IEC 61000-4-6 level 3 EN/IEC 60068-2-27 Ea EN/IEC 61000-4-3 |
| IP degree of protection | IP20 (terminal block) conforming to IEC 60529 IP40 (front panel) conforming to IEC 60529 |
| Environmental characteristic | EMC directive conforming to EN/IEC 61000-6-2 EMC directive conforming to EN/IEC 61000-6-3 EMC directive conforming to EN/IEC 61000-6-4 EMC directive conforming to EN/IEC 61131-2 zone B Low voltage directive conforming to EN/IEC 61131-2 |
| Disturbance radiated/conducted | Class B conforming to EN 55022-11 group 1 |
| Pollution degree | 2 conforming to EN/IEC 61131-2 |
| Ambient air temperature for operation | -20…40 °C in non-ventilated enclosure conforming to IEC 60068-2-1 and IEC 60068-2-2 -20…55 °C conforming to IEC 60068-2-1 and IEC 60068-2-2 |
| Ambient air temperature for storage | -40…70 °C |
| Operating altitude | 2000 m |
| Maximum altitude transport | 3048 m |
| Relative humidity | 95 % without condensation or dripping water |
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
4.9 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 1
DOG SAID NO
i didn't realize that this was bamboo when i purchased it. My dog has loved other braided BONE but this one did not fool him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
★★★★★ 5
Still squeaking after all these days!
Size: Jumbo, Style: Beef
My power chewer GSPs usually wreck all "tough" toys in less than an hour, especially if they squeak. These seem pricey but I can say it's held up really well. After about three weeks, it's still hanging in there! The stripes are worn off but the squeaker still squeaks and that's what it's all about.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Long lasting scent and has not been destroyed by my heavy chewer.
Size: Jumbo, Style: Bacon
My medium puppy loves this ball. She already has the smaller size but appears to enjoy the challenge of catching the large one. An added benefit is it's easier for me to win it back when we fight (play fighting) for it.
The scent really lasts. I've had the smaller version for a few months and the scent is still there. Does it really smell like bacon? Not to my nose but the puppy thinks it's awesome.
The ball itself is really tough. The pup can destroy a tennis ball in a day. Except for a few teeth marks these balls are holding together great.
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Reviewed in the United States on June 10, 2026
★★★★★ 5
Worth every penny—my beagle is obsessed
Size: Medium, Style: Cheddar Cheese, Size: Medium, Style: Cheddar Cheese
No dog toy is indestructible if you have a hound or a pit. I happen to have a combination of both. This toy is the best $12 you could possibly spend for a dog that likes to “kill” their toys. The only reason I’m buying more is because I keep losing them.
My dog is a rescue. She’s half beagle, a quarter boxer, and a quarter pit bull. She’s a tiny fire-cracker and I lover her to pieces. And she loves tennis balls to pieces. Literally.
She adores tennis balls, squeaky toys, and food. She will absolutely try to surgically extract the squeaker from any toy she gets because she has a high prey-drive. These balls last usually at least a week before she manages to dislodge the squeaker or puncture the squeaking mechanism, but I still have one I got about six months ago that has the paint worn off and it still squeaks.
This ball literally has everything. It squeaks, it bounces pretty high, it looks like a real tennis ball so my girl recognizes them as “toy” immediately, and they smell good.
These balls in particular last forever. I got her a can of regular tennis balls and she had them in four pieces within 10 minutes or less, which is not healthy for her because she likes to eat the pieces. For this dog toy, I have never seen her crack it. She’s pushed the squeaker inside of exactly one of them so far, and it stayed inside the ball. Much safer than a toy that she can possibly ingest.
The toys come in several colors, but it’s not just to make them look cute and colorful. The colors correspond to flavors, as each of the balls has a different scent. I’ve sniffed them and noticed there’s a mild food smell beneath the rubber scent. I can tell that dogs really do get a kick out of the “flavors.”
I’ve taken these to the dog park and all the dogs want the Playology tennis ball, even if we have other generic balls flying around. My dog even has favorites. We have a muscle-head pit bull/staffy mix at the park who is a giant meat-ball. He got his hands on one of these and he wasn’t even able to break it open for at least 20 minutes of deliberate chewing.
My girl’s favorite “flavor” for a long time was beef (the red one). The blue “peanut butter” flavor is the easiest one to find in stores. She was obsessed with a purple one for a while, apparently it was bacon flavor. I couldn’t find that one! I saw that Amazon has an orange “cheese” flavor and knew she’d love it. She’s obsessed.
I really wanted to leave this review to convince people to invest in this product. Your dog will be so happy, and this company made something great.
I’m worried because I went on their website yesterday and they had only one or two colors available. I don’t want them to stop making this amazing toy. I hope they don’t lose business because their product is TOO durable!! If they make more flavors, or maybe make some multi-dog (tug ropes?) or similar, I’ll definitely continue to be a customer. Please keep making these awesome tennis balls!
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Reviewed in the United States on January 13, 2025
★★★★★ 5
Not Squeakable for Mini/Toy Aussies
Size: Medium (VALUE 2-Pack), Style: Chicken
Very durable and good squeaker. However, too large and hard for my Mini Aussies to squeak. My Aussies love their squeaky toys, unfortunately not this one.
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Reviewed in the United States on May 1, 2026