Office Manager’s FAQ: What I Learned Ordering Omron E4 TENS Units, Flip Phones & UPS Backup for a Growing Company

Five Questions I Didn’t Know I Had About Ordering This Stuff

When I took over purchasing in 2020 for a 120-person company, I thought ordering a Omron TENS unit or a UPS or even a simple flip phone for the warehouse would be straightforward. It wasn’t. After processing maybe 60 orders annually across 8 vendors, I’ve collected some answers the hard way. Here’s the FAQ I wish I’d had.

1. Is the Omron E4 the right TENS unit for a corporate first-aid kit?

Short answer: Yes—for most offices. I ordered 4 units after our safety coordinator flagged increased employee requests for back pain relief. The Omron E4 has four electrode pads instead of two, which means broader coverage. One employee (a warehouse lead) told me it helped her lower back more than the cheaper two-pad model we had.

What caught me off guard: The E4 requires 4 AAA batteries—not included. I had to place a separate order for batteries. Minor, but annoying. If you’re ordering for multiple locations, add batteries to your checklist. Around $45 per unit as of March 2025, give or take a few dollars depending on the vendor.

2. Do I need a prescription for an Omron TENS unit?

No—not for the Omron TENS unit models commonly sold (E4, Max, Pain Relief Pro). These are over-the-counter devices. Our legal team did a quick check: as long as we’re not making medical claims (they’re for “pain management”, not “treatment”), we’re fine. That said, we include a brief disclaimer on our internal ordering form: “Consult a physician before use if you have a pacemaker or are pregnant.”

Honestly, I’m not sure why some vendors try to add a “medical device” label to these purchases. It’s a TENS unit, not an MRI machine. My best guess? It’s a liability hedge. Either way, you don’t need a prescription.

3. Why would a company buy a flip phone in 2025?

For the warehouse and field service team. Our maintenance tech was destroying smartphones at a rate of one every 4 months—drops, moisture, dust. A flip phone (basic, durable, cheap) solved that. We pay around $30 per unit, no data plan required. It’s for calls and texts only. No apps, no distractions, no cracked screens.

What most people don’t realize: Some flip phones still come with a micro-USB charger, not USB-C. We ordered 5 units, and 3 had micro-USB ports. So I had to buy charging cables separately. If you’re standardizing on USB-C (like we are), check the spec sheet carefully. That said, the simplicity is a feature, not a bug.

4. What UPS should I order for a small server closet?

We have a modest setup: a NAS, a PoE switch, and a router. I ordered a UPS rated for 1500VA / 900W. It runs our critical gear for about 15 minutes—enough time for an orderly shutdown. Picked up an APC unit for $179 from an online supplier. In my experience, you don’t need a massive unit for a small office. 1500VA is the sweet spot for most mid-size businesses.

One thing I learned the hard way: UPS batteries lose capacity over time. Our 2020 purchase now lasts only 8 minutes. Plan to replace the battery every 3-4 years. Also, check if the vendor includes a communication cable for automatic shutdown. Some don’t, and your IT admin will be annoyed.

5. How do I reset a cordless phone system for the receptionist?

Our receptionist’s cordless phone stopped pairing with the base. I spent 30 minutes Googling before finding the right sequence. Here’s the how to reset cordless phone procedure that worked for our Panasonic model:

1. Unplug the base unit from power and remove the handset batteries.
2. Wait 30 seconds (I used a stopwatch on my phone—yes, I’m that person).
3. Reinsert the handset batteries, then plug the base back in.
4. On the handset, press and hold the Locator button for 10 seconds until it beeps.
5. Place the handset on the base for 5 seconds. It should register within 2 minutes.

If that doesn’t work, check the battery contacts. Ours had a slight corrosion issue—cleaned it with a pencil eraser and it worked. A lesson learned the hard way: always check the obvious stuff first.

6. Bonus: One question I didn’t think to ask (but should have)

When I first ordered an Omron E4, I assumed the included electrode pads would last months. They didn’t. After about 15 uses, the gel starts losing adhesion. Replacement pads cost around $12 per pack. So if you’re ordering for multiple employees, factor in replacement pads every 3-4 months. That’s a hidden cost most people don’t mention. If someone has insight on a longer-lasting pad brand, I’d love to hear it.

Prices referenced as of March 2025. Verify current pricing with your supplier, as rates may have changed.