If you are Raspberry pi user and frequency need various sensors to explore the all possible project with Raspberry Pi 3 & Raspberry Pi 2 Model B. Here is Sensor kit in which you will get 16 different sensors compatible with the raspberry pi.

Following is some brief info about sensors:

1.KY-008 laser sensor module
Operating voltage: 5V
Specifications: 15 * 24 mm
Light source wavelength: 650 nm

2.Obstacle avoidance sensor module
VCC: 3.3V-5V external voltage (can be directly connected to the 5v and 3.3v microcontroller MCU)
GND: External GND
OUT: Small board digital output interface (0 and 1)
Connection method: VCC-VCC; GND-GND; OUT-IO
Board size: 3.2 x 1.4cm

3.Flame sensor module
Operating voltage: 3.3V-5V
Output form: DO digital switching output (0 and 1) and AO analog voltage output
Size: 3.2cm x 1.4cm
Detect flame or wavelength range (approx): 760 nm to 1100 nm, lighter flame test distance is 80cm, the greater flame, the farther test distance
Detection angle is about 60 degree, particularly sensitive to flame photometry
Adjustable sensitivity

4.315M wireless transceiver module
Operating voltage: DC5V
Quiescent current: 4mA
Receiving frequency: 315MHz
Receiving sensitivity: -105DB
Size: 30 x 14 x 7mm

5.Emission head parameters
Transmission distance: 20-200 meter (different voltage, different effect)
Operating voltage: 3.5-12V
Dimension: 19 x 19mm
Work: AM
Transfer rate: 4KB / S
Transmitting power: 10mW
Transmission frequency: 315M
Pinout left → right: (DATA, VCC, GND)

6.One channel TCRT5000 tracing module
Detection distance: about 10mm
Operating voltage: 5V, black line output low level, white line output high level

7.Vibration sensor module
Operating voltage: 3.3V-5V
Output type: Digital switching output (0 and 1)
Small PCB board size: 3.2cm x 1.4cm

8.MQ-2 gas sensor module
Dimension: 32 x 22 x 27mm
The main chip: LM393, ZYMQ-2 gas sensor
Operating voltage: 5V DC
Dual signal output (analog output, and TTL level output)
TTL output valid signal is low level. (When the output low level signal light can be directly connected microcontroller)
Analog output: 0 ~ 5V voltage, the higher the concentration the higher the voltage.

9.Sound sensor module
Operating voltage: 3.3V-5V
Small PCB board size: 3.4cm x 1.6cm

10.DHT11 temperature and humidity sensor module
VDD: 3.3-5.5V DC
DATA: Serial data
NC: No connection
GND: Grounding, negative power supply

11.HC-SR04 ultrasonic sensor module
Operating voltage: 5V
Ultra-small quiescent current: less than 2mA
Induction angle: not more than 15 degrees
Detection distance: 2cm-400cm
High precision: up to 0.3cm

Package Includes:

1 x DS1302 RTC Real Time Clock Module (No Battery)
1 x SW-420 Normally Closed Vibration Sensor Module
1 x SW1801P 3pin Normally open vibration sensor module
1 x 315Mhz RF Wireless Transmitter and Receiver Kit
1 x Sound Sensor Module
1 x TCRT5000 Tracking Module
1 x KY-008 650nm Laser sensor Module 6mm 5V
1 x DHT11 Temperature and Humidity Sensor Module
1 x HC-SR501 PIR Motion Sensor Module Green
1 x HC-SR04 Ultrasonic Sensor 4pin
1 x MQ-2 Smoke Gas LPG Butane Hydrogen Sensor Module
1 x Soil Moisture Detection Humidity Sensor Module
1 x Raindrops Detection Sensor Module Snow RainWeather
1 x IR Infrared Flame Detection Sensor Module
1 x 3pin Photosensitive Sensor Module Light-Dependent Control
1 x Infrared Obstacle Avoidance Tracking Sensor Module