The JDPM01 pressure module includes a piezo-resistive pressure sensor and an ADC interface. It provides 16 bit word data for pressure and temperature related voltage. With the help of a highly accurate calibration of the senor, 11 unique coefficients were stored on the chip, thus accurate pressure and temperature reading can be realized. HM03 is a low power, low voltage device with automatic power down switching.    I2C Serial Interface is used for communications with a microprocessor. Sensor packaging options are SMD (with metal cap) 

The JDPMO1 is a dual-axis magnetic sensor, it is a complete sensing system with on-chip signal processing and integrated I2C bus, allowing the device to be connected directly to a microprocessor eliminating the need for A/D converters or timing resources. It can measure magnetic field with a full range of ±2 gausses and a sensitivity of 512counts/gauss 3.0 V at 25°C.

• Supply voltage 2.2v-3.6v
• -20°C to + 60°C operating range
• No external components required
• I2C digital output with 400 KHz, fast mode operation.

• Pressure measurement and control systems
• Mobile altimeter/barometer systems
• Weather forecast products
• Adventure or multi-mode watches
• Electronic Compass
• GPS Navigation
• Position Sensing
• Vehicle Detection
• Magnetometry