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Water flood (leak) sensor Based on Nordic Semiconductor nRF52840 module E73-2G4M08S1C from Ebyte. Board size and shape adopted to case of water flood sensor EW70_433 (EV1527) from Shenzhen Kaipule Technology Co., Ltd.
Power source provided by one CR2450 coin battery. In depend on firmware there is can support for Bluetooth 5, Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT and 2.4 GHz proprietary stacks. Board has two independent probes for water sensing, button for mode selection and LED for indication. There are also SWD interface pins for firmware upload and debugging.
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | E73_2G4M08S1C | U1 | E73_2G4M08S1C | 1 |
| 2 | IRLML2402TRPBF | Q1,Q2 | SOT-23(SOT-23-3) | 2 |
| 3 | 62 | R1 | 0603 | 1 |
| 4 | Header-Male-2.54_1x4 | P1 | DIP-1X4P-2.54MM-M | 1 |
| 5 | 3.3M | R3,R2 | 0603 | 2 |
| 6 | 32.768KHz | X1 | OSC-SMD_L3.2-W1.5 | 1 |
| 7 | Probe_1 | P2 | HDR-1X1/2.54 | 1 |
| 8 | Probe_2 | P3 | HDR-1X1/2.54 | 1 |
| 9 | Probe_3 | P4 | HDR-1X1/2.54 | 1 |
| 10 | CR2450 | B2 | BS-2450-2SMT | 1 |
| 11 | 12pF | C1,C2 | 0603 | 2 |
| 12 | 47uF | C3 | 1206 | 1 |
| 13 | KLS7_TS3611 | SW1 | SWITCH_KLS7-TS3611 | 1 |
| 14 | 19-21SURC/S530-A2/TR8 | LED1 | LED0603-RD | 1 |
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