# BlueCharm Beacon 08/04P/021 - KKM K8/K4/K21
| Model Id | KSensor (opens new window) |
|---|---|
| Brand | BlueCharm/KKM |
| Model | Beacon 08/04P/021 - K8/K4/K21 |
| Short Description | Water-Resistant (not the BC021/K21) MultiBeacon (KBeacon and iBeacon protocols supported) |
| Communication | BLE broadcast |
| Frequency | 2.4Ghz |
| Power Source | CR2477 |
| Exchanged Data | temperature, acceleration x/y/z-axis, voltage |
| Encrypted | No |
| Presence Tracker | ✅ |
| Image |  |