How long distance of remote paging

Hi, remote working range is around 500 meters in open air or wild space. Please pay attention to following points before you buy it: 1. Read the item product description about features of it carefully to see if which just the one you are looking for 2. Main feature of this item is 2 way with ultrasonic sensor, no remote start function in this kit. 3. Please note that you need to connect all the necessary wires of in the device. Due to complexity of installation of this item, which required to be installed by a professional car alarm installer or trained alarm installer if you have no alarm installation experience, please make sure you can find one while purchasing it. And you can find an alarm installer in your local town or search “car alarm installation” on amazon or internet to find the installer nearby. If you like, we can send the user manual and wire diagram to you for study so that you can check with your alarm installer. If so, please tell us your email or send an email to us (there is this info in our storefront page)so that we can send them to you. Please tell us the item number when contacting us. If there is any questions, feel free to contact us. Have a nice day. Regards, Eddy

what is the difference between Ultrasonic sensor detecting and microwave sensor/proximity. Is it the same thing?

Hi, they are different. this item ec203 is with ultrasonic sensor in the kit, the ec202 is with microwave sensor in the kit. here is the lik of ec202: https://www.amazon.com/dp/B07Q2VT6JG the Ultrasonic sensors work on the principle of reflected sound waves and are used to measure distance. Sound waves are emitted by the ultrasonic sensor and they’re reflected back if there is an object in front of it. The sensor detects these waves and measures the time it takes between transmitting and receiving those sound waves. Distance is then estimated by the time interval between sensor and object. A microwave motion sensor uses electro-magnetic radiation. It emits waves which are then reflected back to the receiver. The receiver analyzes the waves that are bounced back. If there is an object moving in the car, these waves are going to be altered. hope this info is helpful. regars, Eddy

Which sensor has less false alarms? Ultrosonic or microwave

Hi microwave sensor should have less false alarms, compare to ultrasonic sensor. but if you install the device properly, both sensors can function well. Eddy

Hello, is this alarm suitable for 2006 mercedes benz e55 AMG ?

Hi, we don't recommend this item ec203 on your 2006 mercedes benz e55 AMG as Benz has a very special wiring diagram & the installation is too complicated. however, if you are capable to do the installation, then you can buy it. Please pay attention to following points before you buy it: 1. Read the item product description about features of it carefully to see if which just the one you are looking for 2. Main feature of this item is 2 way car alarm with ultrasonic sensor, no remote engine start function in the kit. we also have other 2 way car alarm with remote engine start feature such as ec200-k9 or ec201-m9. 3. Please note that this is not a plug & play item and you need to connect all the necessary wires of it. Due to complexity of installation of this item, which required to be installed by a professional car alarm installer or trained alarm installer if you have no alarm installation experience, please check if you can find one or not before purchasing. And you can find an alarm installer in your local town or search “car alarm installation” on amazon.com to find the installer nearby. If you like, we can send the user manual and wire diagram to you for study so that you can check with your alarm installer. If so, please tell us your email or send an email to us (there is this info in our storefront page)so that we can send them to you. If there is any questions, feel free to contact us. Have a nice day. Regards, Eddy

Item Weight	2.53 pounds
Package Dimensions	10 x 8.11 x 4.09 inches
Item model number	EC203
Wireless Remote	Yes

EC203 2 Way car Alarm System with LCD Pager Display, ultrasonic Sensor & Shock Sensor DC12V

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