August / 6 models / 2016-2020
Last checked
August's retrofit locks are the Smart Lock in its 1st, 2nd, 3rd and 4th generations, and the Smart Lock Pro.
August says all its smart locks include Bluetooth LE. The 1st, 2nd and 3rd generation locks and the Pro reach Wi-Fi through the Connect Wi-Fi Bridge, and the Pro also supports Z-Wave. The 4th generation Wi-Fi Smart Lock has Wi-Fi built in.
Newest first in each series.
| Series | Model | Released | Serial prefix | Wi-Fi | Price | Newest |
|---|---|---|---|---|---|---|
| 3rd generation (Pro)1 model | ||||||
| 3rd (Pro) | Smart Lock Pro (3rd generation) | [4] | L3[2] | Connect Wi-Fi Bridge[4] | unknown | only model in its series |
| 3rd generation1 model | ||||||
 3rd | Smart Lock (3rd generation) | [4] | L4[2] | Connect Wi-Fi Bridge[6] | $149.99[6] | only model in its series |
| 4th generation1 model | ||||||
 4th | Wi-Fi Smart Lock (4th generation) | [1]announced | L5[2] | Built in[3] | $199.99[3] | only model in its series |
| Works with all August Smart Locks1 model | ||||||
 All | Connect Wi-Fi Bridge | unknown | unknown | Connect Wi-Fi Bridge[7] | $79.99[7] | only model in its series |
1 other model on this line has no stated sale status. The lineup below lists them.
Stores keep selling older models after a replacement ships, The model code identifies each one.
| Older model | Released | Replacement | Status | Basis |
|---|---|---|---|---|
| Smart Lock (2nd generation) | [8] | Newer model: Smart Lock Pro (3rd generation), released 2017-09-19.[4][8] | unknown | Release dates only[4][8] |
| Product | Generation | Released | Generation | Status |
|---|---|---|---|---|
| Smart Lock (1st generation) | 1st | unknown | 1st generation[2] | unknown |
 Smart Lock (2nd generation) | 2nd | [8] | 2nd generation[2] | Succeeded by Smart Lock Pro (3rd generation) (2017-09-19)[4][8] |
| Smart Lock Pro (3rd generation) | 3rd (Pro) | [4] | 3rd generation (Pro)[2] | Current[5] |
| Smart Lock (3rd generation) | 3rd | [4] | 3rd generation[2] | Current[6] |
| Wi-Fi Smart Lock (4th generation) | 4th | [1] | 4th generation[2] | Current[3] |
| Connect Wi-Fi Bridge | All | unknown | Works with all August Smart Locks[7] | Current[7] |
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| Product | Generation | Serial prefix | Wi-Fi | Status | Home Assistant | Homey | Price | Retailers |
|---|---|---|---|---|---|---|---|---|
| 1st generation1 model | ||||||||
| Smart Lock (1st generation) | 1st generation[2] | L1[2] | Connect Wi-Fi Bridge[7] | unknown | Native (cloud) | Official app (cloud) | unknown | |
| 2nd generation1 model | ||||||||
| Smart Lock (2nd generation) | 2nd generation[2] | L2[2] | Connect Wi-Fi Bridge[7] | Succeeded by Smart Lock Pro (3rd generation) (2017-09-19)[4][8] | Native (cloud) | Official app (cloud) | unknown | |
| 3rd generation (Pro)1 model | ||||||||
| Smart Lock Pro (3rd generation) | 3rd generation (Pro)[2] | L3[2] | Connect Wi-Fi Bridge[4] | Current[5] | Native (local) | Official app (cloud) | unknown | |
| 3rd generation1 model | ||||||||
| Smart Lock (3rd generation)AUG-SL04-M01 | 3rd generation[2] | L4[2] | Connect Wi-Fi Bridge[6] | Current[6] | unknown | Official app (cloud) | $149.99[6] | |
| 4th generation1 model | ||||||||
| Wi-Fi Smart Lock (4th generation)AUG-SL05-M01 | 4th generation[2] | L5[2] | Built in[3] | Current[3] | Native (local) | Official app (cloud) | $199.99[3] | |
| Works with all August Smart Locks1 model | ||||||||
| Connect Wi-Fi BridgeAUG-AC02 | Works with all August Smart Locks[7] | unknown | Connect Wi-Fi Bridge[7] | Current[7] | Native (cloud) | unknown | $79.99[7] | |
4 dated events across the line, each with its own source. Products with the same date, event and source share one entry.
August begins shipping the 2nd generation Smart Lock as the HomeKit-enabled model; listed at $229
Bundled with the August Connect Wi-Fi Bridge at $279
Launched at $149 alongside the Smart Lock Pro
Announced with Wi-Fi built into the lock
August prints the generation in the first characters of the serial number. It sits on the back of the lock, under the faceplate, and in the app under the lock's device information.
| Serial prefix | Generation |
|---|---|
| L1 | 1st generation |
| L2 | 2nd generation |
| L3 | Smart Lock Pro (3rd generation) |
| L4 | 3rd generation |
| L5 | 4th generation (Wi-Fi Smart Lock) |
August smart locks by generation. Smart Home Canon. https://smarthomecanon.com/lines/august-smart-locks. Last checked 2026-10-20.