澳大利亚采购需求：涂鸦Zigbee多功能传感器，Zigbee湿度传感器，Zigbee光线传感器，Zigbee运动传感器，Zigbee温度传感器，老年护理产品

I'm interested in purchasing 50 units of your ZigBee Multi-Sensor that monitors motion, temperature, humidity, and light. Could you please provide me with the unit price for this quantity? Additionally, it would be great to know about the expected battery life for these sensors, as this information is crucial for our planning. If you have any bulk purchase options or discounts available, that would be helpful as well. I'm looking forward to your prompt response so that we can move forward with this order as soon as possible. Thank you!