User manual for the Lehmann M400 Smart Secure electronic lock, covering setup, safety, maintenance, and operation.
The M400 Smart Secure is an electronic furniture lock that can be controlled via iOS devices using Bluetooth Low Energy. The manual provides step‑by‑step instructions for pairing up to four iPhone, iPad or iPod devices, configuring the lock, and using the Keyless Go feature.
Safety guidelines, battery replacement procedures, optical indicator installation, and detailed symbol explanations are included. Technical specifications such as frequency, modulation, battery type, and operating temperature are listed for reference. This manual is written in Chinese.
| Operating frequency | 2.480 GHz |
|---|---|
| Modulation | GFSK |
| Battery type | 2 × AA LR6 alkaline 1.5 V |
| Allowed battery types | Only AA alkaline; NiCd, NiMH, carbon‑zinc, lithium not allowed |
| Maximum paired iOS devices | 4 |
| Operating temperature range | +5 °C – +40 °C |
| Storage temperature range | -25 °C – +70 °C |
| Effective range | Limited by structure; recommended ≤30 cm for pairing |
Up to four iPhone, iPad, or iPod devices can be paired with a single lock.
The lock uses two AA LR6 alkaline 1.5 V batteries; NiCd, NiMH, carbon‑zinc, and lithium batteries are not allowed.
The lock operates between +5 °C and +40 °C.
Open the battery compartment, insert the two AA batteries with correct polarity, and close the compartment.