The Chamberlain 940EV wireless keypad brings Security+ 2.0 encryption and proven compatibility to garage door access, working with virtually all Chamberlain, LiftMaster, and Craftsman openers manufactured since 1993 with functional safety sensors. At 4.6 stars across 25,753 reviews, it’s the keypad contractors reach for when customers need reliable keyless entry that handles Montana’s temperature swings.
Skip it if you’re dealing with Craftsman Series 100 or Series 200 openers. The 940EV won’t play nice with those older units. For everyone else, this keypad delivers what matters: quick installation, bombproof encryption, and the convenience features that prevent callbacks.
Technical Specs and Compatibility
The numbers tell the story of a keypad built for professional installation:
| Specification | Value |
|---|---|
| Dimensions | 6.30” H × 2.51” W × 1.01” D |
| Weight | 0.25 lb |
| Power Source | 9V battery (included) |
| Operating Temperature | All-weather rated |
| Encryption | Security+ 2.0 (highest level) |
Compatibility spans Green, Orange, Red, Purple, and Yellow learn buttons, covering the vast majority of residential installations. The keypad handles both 315 MHz and 390 MHz frequencies, including legacy Billion code systems.
Setup takes less than 15 minutes according to user reports, and the process couldn’t be simpler. Insert the included 9V battery, locate the Learn button on the opener motor unit, press and release it, enter a 4-digit PIN within 30 seconds, and wait for the confirmation blink or clicks. No wiring. No programming tools. No callbacks asking why it won’t connect.
Security That Actually Matters
Security+ 2.0 encryption isn’t marketing fluff. It’s the highest level of garage door encryption available, and it matters when you’re installing keypads on high-end homes or anywhere security is a genuine concern. The system generates a new code with every button press, making code grabbing impossible.
The temporary PIN feature for limited-time access solves real problems. Set up a code for the delivery driver, the house cleaner, or the contractor doing the deck. When the job’s done, delete the code. No more hiding keys under fake rocks.
Multiple unique PINs control multiple doors from a single keypad. That’s huge for properties with both attached and detached garages. One keypad, multiple doors, different codes for different family members or employees.
Built for Montana Weather
All-weather rated housing with a hinged protective cover means this keypad handles everything from summer heat to winter ice storms. The metal-finish grey exterior resists UV fading better than glossy plastic alternatives.
Backlit keypad for nighttime visibility matters when customers are fumbling for buttons at midnight in January. The illumination activates with the first button press, making the entire keypad visible in complete darkness.
The low battery indicator prevents the most common service call: “The keypad stopped working.” When the LED flashes during operation, it’s time for a new 9V. Simple as that.
Installation and Professional Benefits
Wireless programming eliminates the biggest headache of older keypads. No running wires through walls. No drilling through siding to fish cables. Mount it where it makes sense for the customer, not where the wiring dictates.
The one-touch close button changes the daily routine. Hit the button on your way out — no PIN required. It’s the feature customers don’t know they want until they have it, then can’t live without.
The 940EV is easier to program for Chamberlain/LiftMaster units and supports the one-touch close feature, which universal models may not support on all units. That compatibility edge matters when you’re standing in a customer’s garage trying to make their existing opener work with a new keypad.
The Professional’s Verdict
At 4.6 stars from over 25,000 reviews, the 940EV has proven itself in the field. Common praise includes easy installation, reliable operation, convenient one-button close, and effective backlighting. The complaints that do surface — confusing instructions for older models, occasional ENTER button failures, and sporadic battery issues — are outliers in a sea of satisfied installations.
The LiftMaster 878MAX is functionally identical, just with professional dealer branding. Same guts, different label.
Montana contractors know this keypad solves real problems. Battery power means no electrical work near the door. All-weather construction handles temperature swings. Security+ 2.0 satisfies even paranoid customers. And the 15-minute installation time keeps labor costs down.
The 940EV isn’t revolutionary. It’s just a well-engineered keypad that does exactly what it promises with minimal fuss. In this business, that’s worth its weight in callbacks you’ll never get.
FAQs
Q: Will the 940EV work with a 20-year-old Craftsman opener?
The 940EV is compatible with Chamberlain, LiftMaster, and Craftsman openers manufactured 1993 and later with functional safety sensors, but is incompatible with Craftsman Series 100 and Series 200 models. Check the learn button color — Green, Orange, Red, Purple, and Yellow buttons are all supported.
Q: How does the Security+ 2.0 encryption compare to older Security+ systems?
Security+ 2.0 represents the highest level encryption available for garage door systems. It uses rolling code technology to prevent code theft, generating a new code with every transmission. Older Security+ systems are good, but 2.0 is the current gold standard.
Q: Can one keypad control multiple garage doors with different codes?
Yes. The 940EV supports multiple unique PINs to control multiple doors. Perfect for properties with multiple garages where different family members or employees need different access levels.
Q: What’s the actual installation time for a typical job?
Users consistently report setup in less than 15 minutes. That includes unboxing, battery installation, programming, and mounting. The wireless design eliminates the wiring time that kills older keypad installations.
Q: How does the 940EV handle Montana’s temperature extremes?
The all-weather rated housing with hinged weather-protective cover shields the buttons from ice and snow accumulation. In practice, these keypads handle -40°F to 100°F without issues.
Ready to Get Started?
Our doors & millwork specialists can help you find the right Chamberlain products for your project.
More from Chamberlain
Explore All Chamberlain Products
We carry Chamberlain across all 11 Montana and Idaho stores.
