WitMotion SINRT Dual-Axis Tilt Switch Inclinometer (Relay Output, RS232/TTL, IP67, ±90°, 0.01° Resolution)

Overview

WitMotion SINRT is a relay-output dual-axis inclinometer / tilt switch designed for angle monitoring and alarm control from 0 to ±90° on X and Y axes. It integrates a core tilt sensor with a high-reliability relay stage (default normally-open, NO) and supports RS232 or TTL configuration. The sensor features IP67 protection, wide supply 9–36 V DC, 0.01° resolution, 0.1° full-range accuracy, and high vibration resistance (>3500 g), suitable for harsh industrial environments and platform-level safety alarms.

---

Key Features

• Dual-axis inclination monitoring: 0 ~ ±90° (X, Y).

• Settable alarm threshold (factory default 10°; user-configurable via RS232/TTL).

• Relay output (default open; NO/NC selectable).

• Precision & resolution: 0.1° accuracy, 0.01° resolution across the full range.

• Power & environment: DC 9–36 V, –40 ~ +85 °C operating, IP67 ingress protection.

• Ruggedness: >3500 g impact resistance; 10 grms, 10–1000 Hz anti-vibration.

• Compact size: approx. 90 × 40 × 29 mm enclosure; 1 m shielded lead.

---

Typical Applications

• High-voltage wire-rod / utility pole angle monitoring

• Hydraulic lifts, aerial work vehicles, pan/tilt heads

• Satellite/solar antenna positioning

• Medical equipment tilt alarms

• Construction machinery angle control and general tilt-based monitoring

---

Specifications

Performance

*One sheet for an RS-232, 1 m cable version lists 227 g; use the lighter value when referring to sensor-only weight.

Electrical Indicators

Mechanics

• Enclosure approx. 90 × 40 × 29 mm

• IP67 sealed aluminum alloy housing (sand-blasted, oxidized)

• Four M6 mounting screws (mounting holes as shown in drawings)

---

Wiring & Electrical Connections

Power & Serial

• Red: VCC 9–36 V

• Black: GND

• Green: RX (TTL/RS232-R)

• Yellow: TX (TTL/RS232-T)

Relay Groups (X/Y, each with signal and COM)

• +X: Gray ; +X COM: White

• –X: Orange ; –X COM: Cyan

• +Y: Brown ; +Y COM: Blue

• –Y: Pink ; –Y COM: Purple

Reset

• B/W (Black/White): Reset — connect to GND for >2 s to set the current position to 0°.

RS232 “232 level” diagram: Pin1 = RED (9–36 V), Pin2 = GREEN (RXD), Pin3 = YELLOW (TXD), Pin4 = GND.

---

Installation Guidance

Mount the sensor so its base is parallel to the measured surface. It supports horizontal installation or vertical installation (single-axis X or Y optional). Observe the axis markings (±X, ±Y) in the diagrams to align with your platform’s tilt directions.

---

Model/Variant Notes

• You may see “SINRT-232 (1-meter cable)” labeling for the RS-232 version; core specs remain the same (dual-axis, relay output, IP67, ±90° range).

• Default alarm threshold is 10°, adjustable via RS232/TTL.

Details

SINRT-232 inclinometer, 1 meter cable, 90×40×29mm, 5–36V, dual-axis ±90°, 0.05° accuracy, IP67, relay analog output, 4-way relay, 2A load, 227g.

WitMotion SIN01RT inclinometer wiring guide. Connect red to 9-36V, black to GND. Green and yellow for RX/TX (TTL/RS232). Gray, white, orange, cyan, brown, blue, powder, purple for tilt switch signals. Reset to GND over 2s sets position to 0°.

Wit Inclinometer software displays X and Y axis angles at 0.000°, with alarm settings for positive and negative directions, delay time of 100ms, and options to write configuration or read data.

WitMotion SIN12RT inclinometer offers ±90° range, X/Y axis sensing, 100 Hz response, 0.01° resolution, ±0.1° accuracy, IP67 rating, relay output, RS232/TTL interface, and 55g weight.

WitMotion SINRT Tilt Switch-Relay with test plate and wiring demonstration