Checkpoint button · WM-30A
RFID checkpoint button
The mark on the wall that each round is proved against. A passive 125 kHz RFID disc — one screw, no battery, nothing to charge or replace.
- ✓Passive and read-only: no battery, no switch, so nothing goes flat mid-shift.
- ✓30 mm across, 4 mm thick, fixed by one screw through the centre — a 4 mm hole in the wall, or adhesive where the surface cannot be drilled.
- ✓Mount it about 1.2 m above the floor and keep it off bare metal — a steel surface detunes the antenna and shortens the read range.
- ✓Night-glow ring available, so the point is still findable with the torch off.
| Frequency | 125 kHz ± 6 kHz |
|---|---|
| Type | Passive, read-only |
| Size | ⌀30 × 4 mm, centre hole ⌀5 mm |
| Fixing | 1 screw, 4 mm hole / adhesive |
| Reads | over 1,000,000 |
| Service life | over 20 years |
| Temperature | -40°C ~ +85°C |
| Weight | 2.8 g |
| Options | Night-glow / anti-metal version for steel surfaces |
