Overview
In power-on state, keep the normally-open fire door in open mode. In the event of fire, receive the command from the monitor and automatically close the fire door to make the fire door ready for evacuation. The open and closed states of fire doors are displayed and these state data are reported to the electrically operated unit of the fire door monitor. Suitable for controlling normally open fire doors.
Technical parameter table
| Models and specifications | TY-LD-301（65KG） TY-LD-301（85KG） TY-LD-301（120KG |
| Outline dimensions | L115mm×W30mm×H22mm(L × W × H) |
| Suitable door weight | Suitable for ≤ 65 kg/≤ 85 kg/≤ 120 kg |
| Suitable door width | Suitable for ≤ 830 mm/≤ 930 mm/≤ 1030 mm |
| Undulating voltage | 18 VDC to 28 VDC |
| Communication mode | Two-wire system |
| Static current | ＜ 300 uA Operating current＜2 mA |
| Closing buffer | Adjustable door closing/locking buffer |
| Installation method | Door pulling side |
| Opening angle | Keep the fire door open at 0 to 150 degrees |
| Operating environment | Temperature: -15°C to 55°C |
| Relative humidity | ≤ 95% (40°C without condensation) |