
3900
Smart Strike 3900 - Series
Fire-rated stainless strike on a 200-series footprint.
- stainless steel
- 3V and/or wired
- Fire-rated stainless body
- 200-series footprint
- BLE, up to 1000 users
- 1000-event audit trail
The 3900 sits in the frame, not on the door furniture. Physical keys keep working. 5dkey issues AES eKeys across sites; the Verroo/NOVAS licence-free app remains the owner-occupier option on the same lock.

The world's first stainless steel, 3V fire-rated smart strike. Available in 12V (3V battery back up), this innovative smart locking solution leaves you free to choose your own mortice lock and door hardware.
| Body | Stainless steel, fire-rated |
|---|---|
| Footprint | 200-series |
| Power | 1× CR2, about 1 year or 40k cycles, up to 3 years standby |
| 12VDC variant | 5D-3900-3V-12V with about 12 months battery backup |
| Radio | Bluetooth Low Energy |
| Users | Up to 1000 |
| Audit trail | 4K onboard, 6 months + cloud |
| Credential | AES eKey via 5dkey (multi-site) or Verroo/NOVAS (owner-occupier) |
| Duty | S8 / D8, 500k cycles |
| Impact | 1200 Nm |
| Temperature | −25 °C to +60 °C |
| Fire assessment | Independently assessed by Warrington Fire to AS1905.1:2015 |

3900
Fire-rated stainless strike on a 200-series footprint.

3950
200-series family shared with the 3900.

5800
Smart retrofit for the Lockwood 001-series footprint.

570V
The smart lock you can't see from the hallway. Perfect for retrofits.

9000
Retrofit core for Abus and Lockwood padlock bodies.

1000CU
BLE controller for garage doors, gates, maglocks, and drop bolts.