MaxBotix MB1242 I2CXL-MaxSonar-EZ4 ultrasonic sensor: PCB, 2 mounting holes and transducer — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/maxbotix-mb1242-xl-maxsonar-ez4/  (sheet CC BY 4.0)
Basis: MaxBotix's own XL-MaxSonar-EZ STEP model, consistent with the I2CXL-MaxSonar-EZ datasheet mechanical table.
Catalog version: 2026-10-20

Overall (mm): length 22.1, width 19.94, height 15.6
- Datum: lower-left PCB corner (pin row along the left edge), board bottom at 0. PCB 22.10 × 19.94 × 1.68.
- Two Ø3.30 mounting holes, diagonal pair at (2.54, 17.40) and (19.56, 4.45).
- Transducer Ø15.24 centred at (11.05, 10.85), its face 15.60 above the board bottom (13.92 above the board top).
- Not modelled: the 7-pin 0.1 in header and its pins (they point down about 9.5, so keep 10 clear under the board) and small components.
- All dimensions are exact nominal millimetres, true size, with no tolerance added.

feature  x (mm)  y (mm)  diameter (mm)
hole 1  2.54  17.40  3.30
hole 2  19.56  4.45  3.30
transducer  11.05  10.85  15.24

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- MaxBotix: I2CXL-MaxSonar-EZ datasheet — web — Publisher's page; dimensions are facts — https://maxbotix.com/pages/i2cxl-maxsonar-ez-datasheet
- MaxBotix: XL-MaxSonar-EZ 3D model (STEP) — web — Publisher's page; dimensions are facts — https://cdn.shopify.com/s/files/1/0550/8091/0899/files/XL-MaxSonar-EZ.stp

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/maxbotix-mb1242-xl-maxsonar-ez4/index.json
API: https://xemstudio.com/api/geometry?object=maxbotix-mb1242-xl-maxsonar-ez4