Everything for the wall mount, its power, and the Zigbee alarm network it sits on. One link per item, the exact products ordered. Prices are what they were at order time, September 2026.
| Item | What it is for | Where | Price |
|---|---|---|---|
| Galaxy Tab S6, SM-T860 / T865 / T867 | The tablet. Must be the S6, not the S6 Lite: two rear camera lenses, S Pen strip on the back, four gold pads on the left edge in portrait. | eBay, used | $150–220 |
| 3D printed parts: plate, frame, block | Send the print shop the link on the print shop page. Black PLA, 40 % infill. | Craftcloud or a local shop | $25–40 |
| Treedix spring pogo pins, 2.5 × 9 mm, 30-pack | Four go in the block and touch the tablet's charging pads. Drill the block's holes to 2.5 mm first. | Amazon | $8.99 |
| J-B Weld Plastic Bonder, 25 ml | Glues the pins in the block, the block in its slot, and the frame to the tablet. | Amazon | $6.79 |
| Wensilon drywall anchors and screws kit | Four #8 screws and anchors for the plate where there is no stud. | Amazon | $7.59 |
| Item | What it is for | Where | Price |
|---|---|---|---|
| Mean Well LPV-20-12, 12 V 1.67 A hardwired supply | Lives in a junction box in the attic, wired to a circuit. Its 12 V output runs down the wall. | Amazon | $10.94 |
| Weewooday 12 V to 5 V buck converter, 3 A | Sits behind the plate; turns the 12 V into an exact 5 V for the pins. | Amazon | $6.99 |
| 18 AWG 2-conductor in-wall wire, 50 ft | The run from the attic box to the plate. In-wall rated. | Amazon | $23.57 |
| Wire nut assortment | Joins in the junction box and behind the plate. | Amazon | $8 |
| AstroAI digital multimeter | The one safety check: +5 V on pin 1 against pin 4 before the tablet ever touches the plate. | Amazon | $14.59 |
| 4-inch junction box with blank cover | Plastic, with built-in cable clamps at the knockouts. Mounts on a joist above the wall. | Home Depot | $5 |
| NM-B cable, 14/2 or 12/2, by the foot | Ten feet from the nearest attic circuit to the new box. 14/2 for a 15 A breaker, 12/2 for 20 A. Sold by the foot in the electrical aisle. | Home Depot | $12 |
| Item | What it is for | Where | Price |
|---|---|---|---|
| SMLIGHT SLZB-06M Zigbee coordinator, PoE | The hub. Plugs into a PoE switch port, placed centrally upstairs. | Amazon | $72.99 |
| IKEA Tretakt smart plug + remote kit, 5 pieces | Zigbee routers. Two downstairs, one at the far end upstairs, one where the map shows a weak link, one spare. | eBay | $65 for 5 |
| SONOFF SNZB-09P Zigbee siren | Door chime at low volume, full alarm when armed. Runs on USB power so it also relays. | Amazon | $24.90 |
| Aqara Zigbee door and window sensor, 3-pack × 3 | Nine contact sensors for doors and windows. The Zigbee model, not the Thread P2. | Amazon | $42.99 each pack |
| SONOFF SNZB-03P Zigbee motion sensor | Optional, not yet bought. One per room a burglar would walk through. | Amazon | $12–15 each |
| Item | What it is for | Where | Price |
|---|---|---|---|
| Neodymium disc magnets, 20 × 3 mm, N52 × 8 | Only used by the earlier magnet-hold design. Returnable. | Amazon | $2.95 each |
| Great 1 adhesive metal plates, 6 round + 6 rectangular | Only used by the earlier magnet-hold design. Returnable. | Amazon | $6.99 |