OMRON Max Power Relief TENS Unit (PM500) review

The OMRON Max Power Relief (PM500) is the most beginner-friendly TENS unit here because its modes are named after body parts rather than waveforms. You choose shoulder, lower back, arm, foot, leg or joint, or one of three massage-like modes called rub, tap and knead, then set one of 15 intensity levels. OMRON says that is twice the power of its Pocket Pain Pro. The box includes a pair of Long Life Pads that OMRON rates for up to 150 uses, a pad holder, a belt clip, a storage case and 2 AAA batteries, and the unit carries a one-year limited warranty. OMRON lists an MSRP of $79.99 and sells through retailers, so the price you pay can differ. The downsides are capacity: it is single channel, so you treat one area at a time, and each session stops at 15 minutes. People who want two areas at once get more from the TENS 7000 for less money.

Who it is for

beginners who want presets named by body area

Price

$79.99 MSRP; sold through retailers listed on OMRON's site.

MSRP $ 79.99 Where to buy
Quoted from the vendor pricing page on November 14, 2026.

Key features

• 6 body pain modes: shoulder, lower back, arm, foot, leg and joint
• 3 massage-like modes: rub, tap and knead
• 15 intensity levels, which OMRON says is 2x the power of the Pocket Pain Pro
• Long Life Pads reusable up to 150 times, with a pad holder
• Easy-to-read LCD, belt clip and storage case

Strengths and weaknesses

• Strength: Modes are labeled by body part, so no settings to learn
• Strength: Pads reusable up to 150 times per OMRON
• Strength: Includes belt clip, pad holder and storage case
• Weakness: Single channel, so one area at a time
• Weakness: Therapy sessions capped at 15 minutes
• Weakness: OMRON lists an MSRP; actual price depends on the retailer

Key facts

• Channels: Single
• Modes: 6 pain + 3 massage
• Intensity levels: 15
• Max session: 15 minutes
• Power: 2 AAA batteries
• Price: $79.99 MSRP

Where it ranks

OMRON Max Power Relief TENS Unit (PM500) is No. 6 in our Best TENS Units verdict.